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Complex Dental Implant Cases Algorithms, Subjectivity, and Patient Cases Along the Complexity Continuum

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Complex Dental Implant Cases Algorithms, Subjectivity, and Patient Cases Along the Complexity Continuum Complex Dental Implant Cases Algorithms, Subjectivity, and Patient Cases Along the Complexity Continuum Mark Durham, DMDa,*, Marco Brindis, DDSb, Nicholas Egbert, DDS, MSDa, Leslie R. Halpern, DDS, MD, PhD, MPHc KEYWORDS Algorithms Complex implant restorations Interdisciplinary collaboration Maxillary and mandibular ridge classification Provider subjectivity KEY POINTS Complex dental implant cases involve a multiplicity of presurgical and postsurgical considerations that are agreed upon by both patient and practitioner. Implant-supported reconstruction in the complex dental implant patient is predicated upon a sur- gical foundation that promotes both long-term function and esthetics. Prosthodontic algorithms are elucidated through a list of the generic operations for providing pa- tients with basic dental implant prosthetics. Provider subjectivity is an essential component of complex cases, and specific complex cases are provided to convey the strong subjective component in such cases. INTRODUCTION edentulous and the partially edentulous jaw. This millennium has especially provided an increased Advances in the discipline of dental implant place- demand by patients for dental implants, which ment have created choices to enhance the expec- has cascaded into economic competition by com- tations of the dental practitioner and his or her panies that market full mouth rehabilitation patients with respect to oral rehabilitation. There whereby the patient regains their teeth regardless are more realistic options for restoration of func- of how they lost them. The implant placement, tion and esthetics regardless of age, and in most however, although well reported in the literature, cases, medical disabilities. The latter can improve can still result in implant failures due to poor pa- both better oral health and health-related quality of tient selection, prior history of oral disease, that life in patients who were once considered hope- is, periodontitis, compliance with oral hygiene in- less “dental cripples.” In addition, the bioactivity structions, and professional maintenance proto- of implant surface design as well as use of hard cols. These morbidities, whether cause or effect, and soft tissue augmentation provides a greater have their basis in poor treatment planning enhancement of surgical sites in both the Disclosure Statement: The authors have nothing to disclose. a Prosthodontist, University of Utah, School of Dentistry, 530 South Wakara Way, Salt Lake City, UT 84108, USA; b Louisiana State University, School of Dentistry, 1100 Florida Avenue, New Orleans, LA 70119, USA; c Oral and Maxillofacial Surgery, University of Utah, School of Dentistry, 530 South Wakara Way, Salt Lake City, UT 84108, USA * Corresponding author. E-mail address: [email protected] Oral Maxillofacial Surg Clin N Am 31 (2019) 219–249 https://doi.org/10.1016/j.coms.2018.12.003 1042-3699/19/Ó 2019 Elsevier Inc. All rights reserved. oralmaxsurgery.theclinics.com 220 Durham et al strategies.1–4 As such, a systematic approach to followed by criteria in a checklist format that will patient assessment must be the number one prior- determine whether a removable or fixed implant ity for complex dental implant treatment planning prosthesis is the best option for the patient. Several in order to avoid a less than optimized outcome. cases have been chosen to illustrate the algorithms With respect to the complex implant case, the the authors use in order to provide an optimized doctor must determine whether implants are the prognosis for surgical/restorative success. best option, especially within a framework of a partially or fully edentulous jaw. In many in- PATIENT WORKUP stances, hard and soft tissue foundations are inadequate for implant placement and must, An evidence-based approach was applied to deter- therefore, be augmented before placing implant mine patient assessment strategies for complex case rehabilitation that were well tested in other fixtures. A promise of a fixed prosthesis may be 1,6 broken if the treatment turns into a removable studies. A literature search was undertaken using appliance, especially when implant placement Medline within the PubMed Portal to choose arti- has resulted in improper positioning to handle cles within the last 15 years. Only articles in English the biomechanical stressors during function. were chosen for inclusion. Each article’s bibliog- Box 1 lists the most common types of complex raphy was further evaluated by hand for relevant cases seen in the oral and maxillofacial surgical publications and reviewed by the authors for inclu- practice. These complex cases not only will often sion. The keywords chosen included “patient require a combination of tissue choices but also assessment,” “complex implant cases and patient will require prosthetic and periodontal reforma- selection,” “complex planning for dental implants,” tions for total rehabilitation in the partially and fully and “complex restoration of the jaw with dental im- edentulous maxilla and mandible.5 An interdisci- plants.” The level of evidence chosen was based on Sackett’s hierarchy of evidence and were predom- plinary approach to restore function and esthetics 6 is most often necessary to offer treatment choices inantly level 1A, 2A, 3A, 4, and 5 (Box 2). The that will be agreeable by both the practitioner and following sections describe several algorithms their patient population. The disclosure of the used in the workup of the patient beginning with a case’s complexity is a nonnegotiable need in medical history and physical examination followed the management of patient-provider relationship. by a series of checklists of hard and soft tissue This article shares subjective claims regarding the criteria, radiologic imaging, and prosthetic strate- restoration of simple to complex cases, because gies that the surgeon, prosthodontist, and peri- sharing cases is an important activity in the disam- odontist can apply to complex implant cases in biguation of case complexity for providers. Ulti- the maxilla and mandible. mately disclosing the subjective perception of case complexity aids patients in their need for Box 2 Criteria for inclusion of articles chosen from emotional management and helps meet patient ex- PubMed literature search according to Sackett’s pectations. A series of algorithms for approaching hierarchy complex dental implant restorations in the partially edentulous and fully edentulous patient is pre- Level of sented. A review of the current literature is used to Evidence Description apply a well-tested systematic assessment 1A Systematic review/randomized trials (RCT) Box 1 1B RCTs with narrow confidence Common complex cases of dental implant limit restorations (All cases may need soft and hard 1C All or none case series tissue augmentation) 2A Systematic cohort 2B Cohort study/low-quality RCT Multi-unit fixed restorations in the esthetic 3A Systematic review of case zone controlled Full-arch restorations that are completely 3B Case-controlled study implant supported 4 Case series/poor cohort case controlled Single-unit fixed restorations in the esthetic 5 Expert opinion zone Full-arch restorations that are implant and tis- From Sadowsky SJ, Fitzpatrick B, Curtis DA. Evidence- sue assisted based criteria for different treatment planning of implant restorations for the maxillary edentulous pa- Fixed restorations outside the esthetic zone tient. J Prosthodont 2015;433–46; with permission. Complex Dental Implant Cases 221 Medical History/Physical Examination phonation, function, and esthetics. The following provides an in-depth evaluation of these Much debate has centered on whether dental im- parameters. plants are a preferred restorative solution in medi- cally compromised patients, who most often are Extraoral hard and soft tissue Table 3 character- candidates for complex restorative rehabilita- izes the extraoral examination based on whether tion.3,4,7 The challenges faced include increased the patient is dentate or edentulous.8 Skeletal pro- risk of peri-implantitis, recurrence of mucosal dis- file, facial contours, soft tissue drape, facial symme- ease, and/or development of osteonecrosis due to try, lip and cheek support, smile line, and relation of pharmacotherapy, that is, the use of certain drugs the upper and lower lip provide a guide to optimal for osteoporosis/bone cancers, and patients who placement of the final restoration. These criteria have been exposed to radiation therapy. Diz and are addressed with and without existing prostheses 4 colleagues have suggested that risk/morbidity in order to determine the anatomic limitations pre- of dental implant placement in medically compro- cluding stability and retention for a complete den- mised patients should be predicated upon careful ture as well as tolerance for palatal coverage in patient workup because new evidence supports patients who are refractory gaggers. Regardless successful survival in these patients.7 Kotsakis of design, facial support becomes critical because 3 and colleagues in a systematic review evaluating dentofacial imbalances also need to be addressed implant placement in the maxilla of medically to determine a balance between the esthetic plane compromised patients conclude that implant sur- and functional occlusion. The balance between up- vival is acceptable based on disease type and ap- per and low lip esthetics is determined by the con- pears more predictable in the mandible than vexity or concavity of the patient’s profile because maxilla.
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