DOCSLIB.ORG

Fabricating Complete Dentures with CAD/CAM Technology

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Fabricating Complete Dentures with CAD/CAM Technology Fabricating complete dentures with CAD/CAM technology Luis Infante, DDS,a Burak Yilmaz, DDS, PhD,b Edwin McGlumphy, DDS, MS,c and Israel Finger, DDS, MSd School of Dentistry, Louisiana State University Health Sciences Center, New Orleans, La; Division of Restorative and Prosthetic Dentistry, The Ohio State University, College of Dentistry, Columbus, Ohio Conventional complete denture prosthetics require several appointments to register the maxillomandibular relationship and evaluate the esthetics. The fabrication of milled complete dental prostheses with digital scanning technology may decrease the number of appointments. The step-by-step method necessary to obtain impressions, maxillomandibular relation records, and anterior tooth position with an anatomic measuring device is described. The technique allows the generation of a virtual denture, which is milled to exact specifications without the use of conventional stone casts, flasking, or processing techniques. (J Prosthet Dent 2014;-:---) Present-day advances have led to restoration with the CAM portion of software that allowed the milling of the incorporation of computer-aided the system. the tooth sockets in the denture base design/computer-aided manufacturing In 2007, Quaas et al6 studied the according to the desired arrangement. (CAD/CAM) technology into the measurement uncertainty and the 3- The use of computer-generated design and fabrication of dental res- dimensional accuracy of a mechanical dentures is changing the procedures torations, including complete den- digitizing system and concluded that for denture fabrication. CAD/CAM tures. Different systems for making the measurement uncertainty for the technology differs from the conven- impressions and fabricating casts of a system was low and the precision was tional method in that the laboratory patient’s dental structures have been high. However, they discouraged the work is simplified and fewer appoint- introduced,1,2 some of which also application of this method for the ments are needed.10 Recently, Bidra11 allow for the production of specific digitization of flexible impression ma- reported the use of CAD/CAM tech- restorations in the laboratory, in the terials because the physical contact of nology for the fabrication of mandib- dental office, or at a centralized pro- the probe with the soft material might ular implant-retained overdentures in duction center.3-5 lead to deformation and increased in- only 2 clinical appointments. This The information for the develop- accuracy. In 2012, Goodacre et al2 report describes a technique to fabri- ment of a CAD/CAM cast or restora- proposed a technique to obtain maxil- cate a complete dental prosthesis with tion can be acquired extraorally from lary and mandibular definitive impres- CAD/CAM technology. The technique an impression or from a cast of sions of the edentulous arches so these presented uses a standard clinical pro- the object or intraorally by directly could be scanned and data acquired to cedure to fabricate dentures for a pa- recording the structures intraorally. mill denture bases with CAD/CAM tient with existing dentures in only 2 Different systems use different tools to technology. They also described the appointments. The measurements were collect this information. Mechanical process for recording the neutral zone, recorded at the first appointment and digitizing systems rely on touch probes the maxillary and mandibular anterior inserted at the second appointment. (tactile),6,7 whereas optical digitizing teeth position, the palatal morphology, systems use cone beam computed to- the occlusal vertical dimension, and the TECHNIQUE mography,8,9 laser,5 or light-emitting interocclusal relation so these could be diode scanners.5,6 These data are pro- included as part of the process of 1. Make a definitive impression cessed by software and then used fabricating the bases. Furthermore, they with the impression materials and ther- to fabricate the desired object or used a prototype of 3-dimensional moplastic moldable trays which are aAssistant Professor, Louisiana State University Health Sciences Center. bAssistant Professor, Division of Restorative and Prosthetic Dentistry, The Ohio State University. cProfessor, Division of Restorative and Prosthetic Dentistry, The Ohio State University. dAdjunct Clinical Professor, Division of Restorative and Prosthetic Dentistry The Ohio State University. Infante et al 2 Volume - Issue - available in different sizes (AvaDent). the residual ridge (Fig. 3). If the residual AMD as far posteriorly as possible and Initially, mix the 2 part heavy-consistency ridge is between sizes, use the smaller place it horizontally (Fig. 4). polyvinyl siloxane (PVS) and press it AMD size. With the existing dentures in 6. Place both AMDs into the into the existing denture to create a the mouth, assess the occlusal vertical mouth and attach the AvaDent ruler PVS cast. dimension (OVD) and rest position (Fig. 5). Align the ruler parallel to the 2. Measure the residual ridge and with a preferred assessment method.12 interpupillary line and record the angle select the appropriate thermoplastic Establish whether these dimensions are that will be used to correlate the tray. Place the tray in a hot water bath correct or whether they need to be completed AMD to the virtual (77C) and mold to the cast. altered. Once established, place dots mounting with software algorithms. 3. Evaluate the tray intraorally to on the patient’s facial features and re- With the central bearing tracing device ensure it covers all the appropriate cord the OVD with a caliper. resting on the mandibular tray, adjust anatomic areas and adjust the borders 5. Coat the AMD maxillary tray the OVD by turning the fitting on the as needed. As with any conventional with the specified adhesive (Express fast side of the AMD to raise and lower the edentulous impression technique, dry set polyvinyl siloxane PVS max- central bearing pin (Fig. 6). Then the tissue with gauze. First, border the illomandibular registration record; Xer- confirm the OVD. To confirm the mold with heavy-body material and tec) material onto the tray and place centric relation with a gothic arch make the definitive impression with a intraorally to stabilize the AMD on the tracing, coat the tip of the bearing pin regular-set light-body PVS material residual ridge before making the re- with a marking agent, coat the (Figs. 1, 2). cords. Coat the AMD mandibular tray mandibular tray with occlusal spray, or 4. Choose the correct size anatomic with adhesive, express the PVS max- rub it with occlusal paper. Guide the measuring device (AMD) (1 of 3 avail- illomandibular relationship record ma- patient’s mandible back and trace able sizes) (AvaDent) by using the terial onto the tray, and place the tray lateral, anterior, and posterior excur- caliper to measure the widest part of in the mouth. Extend the mandibular sions on the mandibular tray with the 1 Maxillary definitive impression. 2 Mandibular definitive impression. 3 Maxillary and mandibular anatomic measuring devices 4 Maxillomandibular relationship record material being (AMDs). expressed into AMD maxillary tray. The Journal of Prosthetic Dentistry Infante et al - 2014 3 5 Registration of interpupillary line. 6 OVD adjustment by turning screw on side of AMD. 7 Stabilization of AMD by injecting maxillomandibular 8 Use of composite resin to stabilize transparent guide. relationship record material into area between maxillary and mandibular trays. bearing pin. Direct the patient to “keep the esthetic transparent guide onto the 11. Once processed, the dentures are jaws together,”“slide lower jaw as far existing denture. Use 1 of 3 overlay returned to the dentist for delivery to forward as possible,”“as far back as esthetic transparent guides, which repre- the patient (Fig. 10). possible,” and “as far left and right as sent different tooth sizes. Once the possible.” Create the gothic arch proper transparent guide is chosen, tracing accordingly. establish the desired gingival height and DISCUSSION 7. Remove the mandibular tray and mark it on the prescription. Mark the drill a divot into the tray at the tip of midline and incisal edge for the anterior Many materials have been used in the arrow. Replace the tray intraorally, teeth on the lip support. Place composite the fabrication of denture bases. From place the tip of the pin into the divot, resin (Tetric EvoFlow; Ivoclar Vivadent) wood to porcelain, no material has and stabilize the AMD by liberally onto the transparent guide and adhere received the same attention or gained injecting maxillomandibular relation- this to the lip support. With the AMD in the same popularity as PMMA [poly(- ship record material into the area be- the mouth, verify the esthetics and OVD methyl methacrylate)].13-15 Although tween the maxillary and mandibular (Fig. 8). it is the most common material AMD trays (Fig. 7). Remove any record 9. Send both the completed im- used today, PMMA is not without material from the maxillary AMD that pressions and the final AMD to the problems. These problems are related to might interfere with the drape of the lip. laboratory for fabrication of the processing, porosity, fracture strength, Adjust the lip support to the desired lip dentures. dimensional stability, color stability, fullness by turning the fitting on the 10. Examine the digital preview vir- and biocompatibility (allergenic re- anterior of the lip support. tual setup sent by the laboratory, and actions).16,17 Challenges with the use of 8. As a guide for selecting the modify the design of the denture if PMMA bases are being met by either appropriate denture tooth mold, overlay needed (Fig. 9). improving the qualities and properties Infante et al 4 Volume - Issue - sockets are milled with a 5-axis milling machine. The sockets for the selected teeth are milled according to the posi- tion of the selected teeth. The selected teeth are chemically bonded to the AvaDent base material by means of a proprietary PMMA bonding technique that uses heat and pressure, or if requested, a clinical evaluation of the denture can be selected.
Load more

Recommended publications
  • Association Between Dental Prosthesis and Periodontal Disease Among Patients Visiting a Tertiary Dental Care Centre in Eastern Nepal
    KATHMANDU UNIVERSITY MEDICAL JOURNAL Association between Dental Prosthesis and Periodontal Disease among Patients Visiting a Tertiary Dental Care Centre in Eastern Nepal. Mansuri M, Shrestha A ABSTRACT Background Department of Public Health Dentistry Dental caries and Periodontal diseases are the most prevalent oral health problems present globally. The distribution and severity of such oral health problems varies in College of Dental Surgery, different parts of the world and even in different regions of the same country. Nepal BPKIHS, Dharan, Nepal is one of the country with higher prevalence rate of these problems. These problems arise in association with multiple factors. Objective Corresponding Author This study was carried out to describe the periodontal status and to analyse the Mustapha Mansuri association of periodontal disease with the wearing of fixed or removable partial dentures in a Nepalese population reporting to the College of Dental Surgery, B P Department of Public Health Dentistry Koirala Institute of Health Sciences, Dharan, Nepal. College of Dental Surgery, Method BPKIHS, Dharan, Nepal This study comprised of a sample of 200 adult individuals. All data were collected by E-mail: [email protected] performing clinical examinations in accordance with the World Health Organization Oral Health Surveys Basic Methods Criteria. It included the Community Periodontal Index and dental prosthesis examination. Citation Result Mansuri M, Shrestha A. Association Between Dental Prosthesis and Periodontal Disease Among Patients A descriptive analysis was performed and odds ratio (1.048) and 95% confidence Visiting a Tertiary Dental Care Centre in Eastern interval (1.001; 1.096) was found out. The mean age of the population participated Nepal.
    [Show full text]
  • Crowns, Fixed Bridges and Dental Implants Guidelines
    CROWNS, FIXED BRIDGES AND DENTAL IMPLANTS GUIDELINES THE BRITISH SOCIETY FOR RESTORATIVE DENTISTRY INTRODUCTION Standards in healthcare are of fundamental importance. Evidence-based dentistry, audit and peer review are essential components of effective clinical practice. To assist with these processes, the These guidelines should not WHY IS IT THAT BSRD perceives a need for guidelines be considered prescriptive or on acceptable levels of care in didactic. Obviously, there will be restorative dentistry. Some guidance circumstances, encountered during is already available from our sister patient management, when the TEETH DECAY? organisations, the British Endodontic “ideal” treatment may not be Society, the British Society of possible nor the outcome optimal. Periodontology and The British In addition, new techniques and YOU DON’T ALWAYS HAVE TO GO Society of Prosthodontics, within materials will become available their spheres of interest. which will bring about change. This document is intended to act However, it is the Society’s belief TO THE DOCTOR’S TO HAVE HOLES as a stimulus to members of the that these standards can and Society and to the profession to seek should be the goal during attainable targets for quality in fixed management of the majority of IN YOUR ARM STOPPED UP DO YOU? prosthodontics. It is hoped that this clinical cases. document from the Society will assist in the pursuit and maintenance of IT’S A FLAW IN THE DESIGN. high standards of clinical practice. Originally published in 1993, updated in 2007 and 2013. ALAN BENNETT 2 crowns, fixed bridges and implants GUIDELINES crowns, fixed bridges and implants GUIDELINES 3 INDICATIONS ALTERNATIVES TO DEFINITION OF A THE RATIONALE The decision to provide a crown or fixed bridge whether tooth or implant - supported depends on many factors, including: FIXED BRIDGE • The motivation and aspirations of In all situations, the clinical CROWNS AND Any dental prosthesis that is luted, implant abutments that FOR THE USE OF: the patient.
    [Show full text]
  • Retrospective Clinical Study of 656 Cast Gold Inlays/Onlays in Posterior Teeth, in a 5 to 44-Year Period: Analysis of Results
    Retrospective clinical study of 656 cast gold inlays/onlays in posterior teeth, in a 5 to 44-year period: Analysis of results Ernesto Borgia, DDS1, Rosario Barón, DDS2, José Luis Borgia, DDS3 DOI: 10.22592/ode2018n31a6 Abstract Objective. 1) To assess the clinical performance of 656 cast gold inlay/onlays in a 44-year period; 2) To analyze their indications and distribution regarding the evolution of scientific evidence. Materials and Methods. A total of 656 cast gold inlays/onlays had been placed in 100 patients. Out of 2552 registered patients, 210 fulfilled the inclusion criteria. The statistical representative sample was 136 patients; 140 were randomly selected and 138 were the patients studied. Twelve variables were analyzed. Data processing was done using Epidat 3.1 and SPPS software 13.0. Results. At the clinical examination, 536 (81.7%) were still in function and 120 (18.3%) had failed. According to Kaplan-Meier’s method, the estimated mean survival for the whole sample was 77.4% at 39 years and 10 months. Conclusions. Knowledge updating is an ethical responsibility of professionals, which will allow them to introduce conceptual and clinical changes that consider new scientific evidence. Keywords: inlays/onlays, molar, premolar, dental bonding restorations, scientific evidence-based, minimally invasive dentistry. Disclosure The authors declare no conflicts of interest related with this study. Acknowledgements To Lic. Mr. Eduardo Cuitiño, for his responsible and efficient statistical analysis of the data col- lected by the authors. 1 Professor, Postgraduate Degree in Comprehensive Restorative Dentistry, Postgraduate School, School of Dentistry, Universidad de la República, Montevideo, Uruguay.
    [Show full text]
  • A Guide to Complete Denture Prosthetics
    A Guide to Complete Denture Prosthetics VITA shade taking VITA shade communication VITA shade reproduction VITA shade control Date of issue 11.11 VITA shade, VITA made. Foreword The aim of this Complete Denture Prosthetics Guide is to inform on the development and implementation of the fundamental principles for the fabrication of complete dentures. In this manual the reader will find suggestions concerning clnical cases which present in daily practice. Its many features include an introduction to the anatomy of the human masticatory system, explanations of its functions and problems encountered on the path to achieving well functioning complete dentures. The majority of complete denture cases which present in everyday practice can be addressed with the aid of knowledge contained in this instruction manual. Of course a central recommendation is that there be as close as possible collaboration between dentist and dental technician, both with each other and with the patient. This provides the optimum circumstances for an accurate and seamless flow of information. It follows also that to invest the time required to learn and absorb the patient’s dental history as well as follow the procedural chain in the fabrication procedure will always bring the best possible results. Complete dentures are restorations which demand a high degree of knowledge and skill from their creators. Each working step must yield the maximum result, the sum of which means an increased quality of life for the patient. In regard to the choice of occlusal concept is to be used, is a question best answered by the dentist and dental technician working together as a team.
    [Show full text]
  • Full-Arch, Implant- Supported Metal- Ceramic Fixed Dentures
    • Superior prosthesis fit prostheses are very similar to typical sensitive, which precludes their use for • Availability of a permanent digital ceramo-metal fixed partial dentures many patients. Perio & Implant Centers The Team for file for future reproduction of the Monterey Bay (831) 648-8800 used for replacing natural teeth. Jochen P. Pechak, DDS, MSD • Opportunity for digital fabrication A substructure is fabricated to provide Conclusion mobile app: www.GumsRusApp.com in Silicon Valley (408) 738-3423 of a prototype/replica prosthesis both the attachment to underlying web: GumsRus.com in acrylic resin for patient implants, as well as an ideal porcelain While a full-arch, implant-supported approval and adjustments thickness for long-term durability. restoration offers a predictable and • Superior biocompatibility When designed correctly with superior alternative to complete compared with metal alloys, adequate metal support for layering dentures, treating the totally edentulous PDL tm reduced plaque accumulation, and porcelain, they satisfy all requirements patient and patients facing total • Favorable soft tissue response for a prosthodontic rehabilitation. edentulism with such complete The disadvantages related to the use Definitive occlusal surfaces can be PerioDontaLetter prostheses can be a challenging task. Jochen P. Pechak, DDS, MSD, Periodontics, Implant & Laser Dentistry Winter of zirconia include the inability to created in porcelain, or alternatively Close collaboration between the repair fractures, difficulty in adjusting may be made in metal if advisable. periodontist, restorative dentist and the and polishing, and high fracture rates A metal-ceramic prosthesis is very dental laboratory is key to a successful of opposing acrylic prosthesis. esthetic, as ceramic is more life-like clinical result which is more likely to Fixed Prosthetic Treatment Moreover, the use of a minimum than acrylic resin.
    [Show full text]
  • Parameters of Care for the Specialty of Prosthodontics (2020)
    SUPPLEMENT ARTICLE Parameters of Care for the Specialty of Prosthodontics doi: 10.1111/jopr.13176 PREAMBLE—Third Edition THE PARAMETERS OF CARE continue to stand the test of time and reflect the clinical practice of prosthodontics at the specialty level. The specialty is defined by these parameters, the definition approved by the American Dental Association Commission on Dental Education and Licensure (2001), the American Board of Prosthodontics Certifying Examination process and its popula- tion of diplomates, and the ADA Commission on Dental Accreditation (CODA) Standards for Advanced Education Programs in Prosthodontics. The consistency in these four defining documents represents an active philosophy of patient care, learning, and certification that represents prosthodontics. Changes that have occurred in prosthodontic practice since 2005 required an update to the Parameters of Care for the Specialty of Prosthodontics. Advances in digital technologies have led to new methods in all aspects of care. Advances in the application of dental materials to replace missing teeth and supporting tissues require broadening the scope of care regarding the materials selected for patient treatment needs. Merging traditional prosthodontics with innovation means that new materials, new technology, and new approaches must be integrated within the scope of prosthodontic care, including surgical aspects, especially regarding dental implants. This growth occurred while emphasis continued on interdisciplinary referral, collaboration, and care. The Third Edition of the Parameters of Care for the Specialty of Prosthodontics is another defining moment for prosthodontics and its contributions to clinical practice. An additional seven prosthodontic parameters have been added to reflect the changes in clinical practice and fully support the changes in accreditation standards.
    [Show full text]
  • Prosthodontics أ.م.د.وسماء صادق Lec 1
    nd 2 year Prosthodontics أ.م.د.وسماء صادق Lec 1 Prosthetics: The art and science of supplying artificial replacements for missing parts of the human body. Prosthodontics (Prosthetics dentistry): Is the dental specialty pertaining to the diagnosis, treatment planning, rehabilitation and maintenance of the oral function, comfort, appearance. Prosthesis: An artificial replacement of an absent part of the human body. Dental prosthesis: An artificial replacement of one or more teeth (up to the entire dentition in either arch) and associated dento / alveolar structures. Fixed dental prosthesis: Any dental prosthesis that is luted, screwed or mechanically attached or otherwise securely retained to natural teeth, tooth roots, and/or dental implant abutments that furnish the primary support for the dental prosthesis. This may include replacement of one to sixteen teeth in each dental arch. P a g e 1 | 4 nd 2 year Prosthodontics أ.م.د.وسماء صادق Lec 1 Fix dental prosthesis Removable dental prosthesis: Any dental prosthesis that replaces some or all teeth in a partially dentate arch (Partial removable dental prosthesis) or edentate arch (complete removable dental prosthesis). It can be removed from the mouth and replaced at will. Removable partial denture Complete denture: A removable dental prosthesis that replaces the entire dentition and associated structures of the maxillae or mandible, called a complete removable dental prosthesis. P a g e 2 | 4 nd 2 year Prosthodontics أ.م.د.وسماء صادق Lec 1 • Objectives of Complete denture: 1. Restoration of the function of mastication. 2. Restoration of the disturbed facial dimension and contours. (esthetics) 3. Preservation of the remaining tissues in health.
    [Show full text]
  • Prosthetic Treatment with Crowns and Implants in Children – Literature Review
    https://doi.org/10.5272/jimab.2018243.2166 Journal of IMAB Journal of IMAB - Annual Proceeding (Scientific Papers). 2018 Jul-Sep;24(3) ISSN: 1312-773X https://www.journal-imab-bg.org Review article PROSTHETIC TREATMENT WITH CROWNS AND IMPLANTS IN CHILDREN – LITERATURE REVIEW Mariana Dimova-Gabrovska1, Desislava Dimitrova2, Vladislav A. Mitronin3 1) Department of Prosthetic Dentistry, Faculty of Dental Medicine, Medical University - Sofia, Bulgaria. 2) Department of Pediatric Dentistry, Faculty of Dental Medicine, Medical University - Varna, Bulgaria. 3) Department of Gnathology and Prosthetic Dentistry, Faculty of Dentistry, Moscow State University of Medicine and Dentistry, Russia. ABSTRACT: arches. These have its unfavorable effect on the child’s over- Fixed prosthetic treatment in children is indicated all well-being, self-esteem and quality of life. in cases with caries and his complications, genetic aetiol- Other reasons for the impaired integrity and loss of ogy, etc. when extensively destructed tooth structures can- teeth may be mechanical trauma, various genetic and he- not be completely restored with the methods of conserva- reditary diseases, such as ectodermal dysplasia, amelo- and tive dentistry. In these cases, prosthetic treatment is planned dentinogenesis imperfecta. [2, 3]. and performed following certain requirements, with respect In a number of cases, direct restorations with con- to age and the occurring growth changes. ventional methods of dentistry fail in primary dentition. The aim of this study is to analyse and summarize The reasons for this may include the insufficient hardiness the scientific data on the use of fixed prosthetic treatments of dental tissues that provide the retention of the restora- in children.
    [Show full text]
  • Dental Policy
    Dental Policy Subject: Implant Crowns and Fixed Partial Dentures Guideline #: 06 -002 Publish Date: 03/15/2018 Status: Revised Last Review Date: 02/05/2018 Description This document addresses the procedures of implant supported crowns, implant supported abutment crowns, and implant supported fixed partial dentures for replacement of missing teeth. Note: Please refer to the following documents for additional information concerning related topics: • Crowns Inlays and Onlays 02-701 • Implants 06-101 • Abutment crowns and Fixed Partial Dentures 06-701 • Clinical Policy-01 Teeth with Poor or Guarded Prognosis Clinical Indications Dental Services using dental implant supported crowns, implant and abutment supported crowns, or implant and/or abutment supported fixed partial dentures to replace missing teeth. May be considered appropriate as a result of: accidental traumatic injuries to sound, natural teeth from an external blow a pathologic disorder; congenitally missing teeth congenital disorders of teeth resulting in extraction. As it applies to appropriateness of care, dental services are: provided by a Dentist, exercising prudent clinical judgment provided to a patient for the purpose of evaluating, diagnosing and/or treating a dental injury or disease or its symptoms in accordance with the generally accepted standards of dental practice which means: o standards that are based on credible scientific evidence published in peer-reviewed, dental literature generally recognized by the practicing dental community o specialty society recommendations/criteria o any other relevant factors clinically appropriate, in terms of type, frequency and extent considered effective for the patient's dental injury or disease not primarily performed for the convenience of the patient or Dentist Not more costly than an alternative service.
    [Show full text]
  • Occlusion for Implant-Supported Fixed Dental Prostheses in Partially Edentulous Patients: a Literature Review and Current Concepts
    Journal of Periodontal Review Article JPIS & Implant Science J Periodontal Implant Sci 2013;43:51-57 • http://dx.doi.org/10.5051/jpis.2013.43.2.51 Occlusion for implant-supported fixed dental prostheses in partially edentulous patients: a literature review and current concepts Judy Chia-Chun Yuan*, Cortino Sukotjo Department of Restorative Dentistry, University of Illinois at Chicago College of Dentistry, Chicago, IL, USA Implant treatment has become the treatment of choice to replace missing teeth in partially edentulous areas. Dental implants present different biological and biomechanical characteristics than natural teeth. Occlusion is considered to be one of the most important factors contributing to implant success. Most literature on implant occlusal concepts is based on expert opin- ion, anecdotal experiences, in vitro and animal studies, and only limited clinical research. Furthermore, scientific literature re- garding implant occlusion, particularly in implant-supported fixed dental prostheses remains controversial. In this study, the current status of implant occlusion was reviewed and discussed. Further randomized clinical research to investigate the cor- relation between implant occlusion, the implant success rate, and its risk factors is warranted to determine best clinical prac- tices. Keywords: Dental implants, Dental occlusion, Fixed partial denture, Implant-supported dental prosthesis, Review INTRODUCTION odontal ligament (PDL) and are more susceptible to bending loads compared to the natural dentition [7,8]. Several risk fac- Implant-supported fixed dental prostheses (ISFDPs) have tors have been associated with the occlusal overloading of become a desirable treatment option for replacing missing ISFDPs, such as occlusal morphology and scheme [7,9-13], teeth in partially edentulous patients due to their high pre- nonaxial loading, prostheses with cantilever extensions [1,14- dictability and success rates [1-4].
    [Show full text]
  • Rehabilitation of Partially Edentulous Patient Using Implant-Supported Fixed Prosthesis
    ACTA SCIENTIFIC Medical SCIENCES Volume 3 Issue 6 June 2019 Case Study Rehabilitation of Partially Edentulous Patient using Implant-Supported Fixed Prosthesis Yosra Gassara1*, Sarra Nasri2, Belhassen Harzallah3, Mohamed Ben Khelifa4, Mounir Cherif 5 and Dalenda Hadyaoui3 1Department of Fixed Prosthodontics, Research Laboratory of Occlusodontics and Ceramic Prostheses LR16ES15, Faculty of Dental Medicine, University of Monastir, Monastir, Tunisia 2Department of Fixed Prosthodontics, faculty of dental medicine, University of Monastir, Monastir, Tunisia 3Professor, Department of Fixed Prosthodontics, Faculty of dental medicine, University of Monastir, Monastir, Tunisia 4Professor; Head of Department of Dentistry Hospital Fattouma, University of Monastir, Monastir, Tunisia 5Professor, Head of Department of Fixed Prosthodontics, Faculty of dental medicine, University of Monastir, Monastir, Tunisia *Corresponding Author: Yosra Gassara, Department of Fixed Prosthodontics, Research Laboratory of Occlusodontics and Ceramic Prostheses LR16ES15, Faculty of Dental Medicine, University of Monastir, Monastir, Tunisia. Received: April 01, 2019; Published: May 23, 2019 Abstract Background: The most common reasons for losing teeth are tooth decay, periodontal disease, or injury. Missing teeth can affect the esthetic, the oral function and lead to further dental complications. Several treatment modalities were used to replace missing teeth and to avoid tooth shift and bone loss. fully edentulous. This treatment offer esthetic appearance, eliminate the discomfort of removable dentures and improve function Implant-supported fixed prosthesis has provided an available treatment alternative for rehabilitation of patients with partially or and self-esteem. Case Presentation: implant-supported prostheses. He refuses the removable prostheses even as a temporary solution. He has defective crowns on the A patient was referred to the fixed prosthodontic department to replace his missed mandibular teeth with 44, 45 and 31.
    [Show full text]
  • Implant-Supported Prosthetic Therapy of an Edentulous Patient: Clinical and Technical Aspects
    Case Report Implant-Supported Prosthetic Therapy of an Edentulous Patient: Clinical and Technical Aspects Luca Ortensi 1,*, Marco Ortensi 2, Andrea Minghelli 3 and Francesco Grande 4 1 Department of Prosthodontics, University of Catania, 95124 Catania, Italy 2 CDT Private Practice, 40126 Bologna, Italy; [email protected] 3 School of Dentistry, University of Bologna, 40126 Bologna, Italy; [email protected] 4 Oral and Maxillofacial Surgery, University of Bologna, 40126 Bologna, Italy; [email protected] * Correspondence: [email protected] Received: 20 May 2020; Accepted: 23 June 2020; Published: 1 July 2020 Abstract: The purpose of this article is to show how to implement an implant-supported prosthetic overdenture using a digital workflow. Esthetic previewing using a specific software, guided-surgery, construction of the prosthesis, and the esthetic finalization are described in this article. Patients suffering from severe loss of bone and soft tissue volume could benefit from the construction of an overdenture prosthesis as a feasible therapeutic choice for functional and esthetic issues of the patient. Keywords: prosthesis; Digital Smile System; overdenture; digital prosthetic planning; atrophic patient 1. Introduction A pleasant appearance is ever more aspired to in the daily life of everyone, at any age. When adverse changes occur to a visible part of the body, the social and psychological impact can be negative for the individual [1]. Among the least well-tolerated changes is edentulism; which, in addition to causing significant functional deficits (chewing, phonetics), involves visible changes of facial esthetics, because with the loss of teeth and the resulting reabsorption of the alveolar crests, there is naturally less support for the soft tissues of the face, which takes on an unpleasant look, regardless of the person’s age.
    [Show full text]