Tooth Eruption: Topical and Systemic Factors That Influence the Process
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Keratocystic Odontogenic Tumour Mimicking As a Dentigerous Cyst – a Rare Case Report Dr
DOI: 10.21276/sjds.2017.4.3.16 Scholars Journal of Dental Sciences (SJDS) ISSN 2394-496X (Online) Sch. J. Dent. Sci., 2017; 4(3):154-157 ISSN 2394-4951 (Print) ©Scholars Academic and Scientific Publisher (An International Publisher for Academic and Scientific Resources) www.saspublisher.com Case Report Keratocystic Odontogenic Tumour Mimicking as a Dentigerous Cyst – A Rare Case Report Dr. K. Saraswathi Gopal1, Dr. B. Prakash vijayan2 1Professor and Head, Department of Oral Medicine and Radiology, Meenakshi Ammal Dental College and Hospital, Chennai 2PG Student, Department of Oral Medicine and Radiology, Meenakshi Ammal Dental College and Hospital, Chennai *Corresponding author Dr. B. Prakash vijayan Email: [email protected] Abstract: Keratocystic odontogenic tumor (KCOT) formerly known as odontogenic keratocyst (OKC), is considered a benign unicystic or multicystic intraosseous neoplasm and one of the most aggressive odontogenic lesions presenting relatively high recurrence rate and a tendency to invade adjacent tissue. On the other hand Dentigerous cyst (DC) is one of the most common odontogenic cysts of the jaws and rarely recurs. They were very similar in clinical and radiographic characteristics. In our case a pathological report following incisional biopsy turned out to be dentigerous cyst and later as Keratocystic odontogenic tumour following total excision. The treatment was chosen in order to prevent any pathological fracture. A recurrence was noticed after 2 months following which the lesion was surgically enucleated. At 2-years of follow-up, patient showed no recurrence. Keywords: Dentigerous cyst, Keratocystic odontogenic tumour (KCOT), Recurrence, Enucleation INTRODUCTION Keratocystic odontogenic tumour (KCOT) is a CASE REPORT rare developmental, epithelial and benign cyst of the A 17-year-old patient reported to the OP with a jaws of odontogenic origin with high recurrence rates. -
Ludwig's Angina: Causes Symptoms and Treatment
Aishwarya Balakrishnan et al /J. Pharm. Sci. & Res. Vol. 6(10), 2014, 328-330 Ludwig’s Angina: Causes Symptoms and Treatment Aishwarya Balakrishnan,M.S Thenmozhi, Saveetha Dental College Abstract : Ludwigs angina is a disease which is characterised by the infection in the floor of the oral cavity. Ludwig's angina is also otherwise commonly known as "angina". Previously this disease was deemed as fatal but later on it was concluded that with proper treatment this infection can be removed and the pateint can recover. It mostly occurs in adults and children are not affected by this disease. As the infection spreads further it would affect the wind pipe and lead to swellings of the neck. The skin around the neck would also be infected severely and lead to redness. The individual would mostly be febrile during this time. Since the airway is blocked the individual would suffer from difficulty in breathing. If the infection spreads to the internal ear then the individual may have audio impairment. The main cause for this disease is dental infections caused due to improper dental hygiene. Keywords: Ludwigsangina ,trasechtomy, fiberoptic intubation INTRODUCTION: piercing(6)(8)(7). In a study that was conducted on 16 Ludwig's angina, otherwise known as Angina Ludovici, is a different patients suffering from ludwigs angina, serious, potentially life-threatening cellulitis, or connective Odontogenic infection was the commonest aetiologic factor tissue infection, of the floor of the mouth, usually occurring observed in 12 cases (75%), trauma was responsible for 2 in adults with concomitant dental infections and if left (12.5%) while in the remaining 2 patients (12.5%) the untreated, may obstruct the airways, necessitating cause could not be determined. -
High Frequency of Allelic Loss in Dysplastic Lichenoid Lesions
0023-6837/00/8002-233$03.00/0 LABORATORY INVESTIGATION Vol. 80, No. 2, p. 233, 2000 Copyright © 2000 by The United States and Canadian Academy of Pathology, Inc. Printed in U.S.A. High Frequency of Allelic Loss in Dysplastic Lichenoid Lesions Lewei Zhang, Xing Cheng, Yong-hua Li, Catherine Poh, Tao Zeng, Robert Priddy, John Lovas, Paul Freedman, Tom Daley, and Miriam P. Rosin Faculty of Dentistry (LZ, Y-HL, CP, RP), University of British Columbia, and BC Cancer Research Centre (MPR), Cancer Control Unit, Vancouver, British Columbia, School of Kinesiology (XC, TZ, MPR), Simon Fraser University, Burnaby, British Columbia, Faculty of Dentistry (JL), Dalhousie University, Halifax, Nova Scotia, and Department of Pathology (TD), University of Western Ontario, London, Ontario, Canada; and The New York Hospital Medical Center of Queens (PF), Flushing, New York SUMMARY: Oral lichen planus (OLP) is a common mucosal condition that is considered premalignant by some, whereas others argue that only lichenoid lesions with epithelial dysplasia are at risk of progressing into oral carcinoma. A recent study from this laboratory used microsatellite analysis to evaluate OLP for loss of heterozygosity (LOH) at loci on three chromosomal arms (3p, 9p, and 17p) (Am J Path 1997;Vol151:Page323-Page327). Loss on these arms is a common event in oral epithelial dysplasia and has been associated with risk of progression of oral leukoplakia to cancer. The data showed that, although dysplastic epithelium demonstrated a high frequency of LOH (40% for mild dysplasia), a significantly lower frequency of LOH was noted in OLP (6%), which is even lower than that in hyperplasia (14%). -
Pediatric Oral Pathology. Soft Tissue and Periodontal Conditions
PEDIATRIC ORAL HEALTH 0031-3955100 $15.00 + .OO PEDIATRIC ORAL PATHOLOGY Soft Tissue and Periodontal Conditions Jayne E. Delaney, DDS, MSD, and Martha Ann Keels, DDS, PhD Parents often are concerned with “lumps and bumps” that appear in the mouths of children. Pediatricians should be able to distinguish the normal clinical appearance of the intraoral tissues in children from gingivitis, periodontal abnormalities, and oral lesions. Recognizing early primary tooth mobility or early primary tooth loss is critical because these dental findings may be indicative of a severe underlying medical illness. Diagnostic criteria and .treatment recommendations are reviewed for many commonly encountered oral conditions. INTRAORAL SOFT-TISSUE ABNORMALITIES Congenital Lesions Ankyloglossia Ankyloglossia, or “tongue-tied,” is a common congenital condition characterized by an abnormally short lingual frenum and the inability to extend the tongue. The frenum may lengthen with growth to produce normal function. If the extent of the ankyloglossia is severe, speech may be affected, mandating speech therapy or surgical correction. If a child is able to extend his or her tongue sufficiently far to moisten the lower lip, then a frenectomy usually is not indicated (Fig. 1). From Private Practice, Waldorf, Maryland (JED); and Department of Pediatrics, Division of Pediatric Dentistry, Duke Children’s Hospital, Duke University Medical Center, Durham, North Carolina (MAK) ~~ ~ ~ ~ ~ ~ ~ PEDIATRIC CLINICS OF NORTH AMERICA VOLUME 47 * NUMBER 5 OCTOBER 2000 1125 1126 DELANEY & KEELS Figure 1. A, Short lingual frenum in a 4-year-old child. B, Child demonstrating the ability to lick his lower lip. Developmental Lesions Geographic Tongue Benign migratory glossitis, or geographic tongue, is a common finding during routine clinical examination of children. -
Dental Management of the Head and Neck Cancer Patient Treated
Dental Management of the Head and Neck Cancer Patient Treated with Radiation Therapy By Carol Anne Murdoch-Kinch, D.D.S., Ph.D., and Samuel Zwetchkenbaum, D.D.S., M.P.H. pproximately 36,540 new cases of oral cavity and from radiation injury to the salivary glands, oral mucosa pharyngeal cancer will be diagnosed in the USA and taste buds, oral musculature, alveolar bone, and this year; more than 7,880 people will die of this skin. They are clinically manifested by xerostomia, oral A 1 disease. The vast majority of these cancers are squamous mucositis, dental caries, accelerated periodontal disease, cell carcinomas. Most cases are diagnosed at an advanced taste loss, oral infection, trismus, and radiation dermati- stage: 62 percent have regional or distant spread at the tis.4 Some of these effects are acute and reversible (muco- time of diagnosis.2 The five-year survival for all stages sitis, taste loss, oral infections and xerostomia) while oth- combined is 61 percent.1 Localized tumors (Stage I and II) ers are chronic (xerostomia, dental caries, accelerated can usually be treated surgically, but advanced cancers periodontal disease, trismus, and osteoradionecrosis.) (Stage III and IV) require radiation with or without che- Chemotherapeutic agents may be administered as an ad- motherapy as adjunctive or definitive treatment.1 See Ta- junct to RT. Patients treated with multimodality chemo- ble 1.3 Therefore, most patients with oral cavity and pha- therapy and RT may be at greater risk for oral mucositis ryngeal cancer receive head and neck radiation therapy and secondary oral infections such as candidiasis. -
6 Development of the Teeth: Root and Supporting Structures Nagat M
AVERY Chap.06 27-11-2002 10:09 Pagina 108 108 II Development of the Teeth and Supporting Structures 6 Development of the Teeth: Root and Supporting Structures Nagat M. ElNesr and James K. Avery Chapter Outline Introduction Introduction... 108 Objectives... 108 Root development is initiated through the contributions Root Sheath Development... 109 of the cells originating from the enamel organ, dental Single-Root Formation... 110 papilla, and dental follicle. The cells of the outer enamel Multiple-Root Formation... 111 epithelium contact the inner enamel epithelium at the Root Formation Anomalies... 112 base of the enamel organ, the cervical loop (Figs. 6.1 and Fate of the Epithelial Root Sheath (Hertwig's Sheath)... 113 6.2A). Later, with crown completion, the cells of the cer- Dental Follicle... 114 vical loop continue to grow away from the crown and Development of (Intermediate) Cementum... 116 become root sheath cells (Figs. 6.2B and 6.3). The inner Cellular and Acellular Cementum... 116 root sheath cells cause root formation by inducing the Development of the Periodontal Ligament... 117 adjacent cells of the dental papilla to become odonto- Development of the Alveolar Process... 119 blasts, which in turn will form root dentin. The root Summary... 121 sheath will further dictate whether the tooth will have Self-Evaluation Review... 122 single or multiple roots. The remainder of the cells of the dental papilla will then become the cells of the root pulp.The third compo- nent in root formation, the dental follicle, is the tissue that surrounds the enamel organ, the dental papilla, and the root. -
Lecture 2 – Bone
Oral Histology Summary Notes Enoch Ng Lecture 2 – Bone - Protection of brain, lungs, other internal organs - Structural support for heart, lungs, and marrow - Attachment sites for muscles - Mineral reservoir for calcium (99% of body’s) and phosphorous (85% of body’s) - Trap for dangerous minerals (ex:// lead) - Transduction of sound - Endocrine organ (osteocalcin regulates insulin signaling, glucose metabolism, and fat mass) Structure - Compact/Cortical o Diaphysis of long bone, “envelope” of cuboid bones (vertebrae) o 10% porosity, 70-80% calcified (4x mass of trabecular bone) o Protective, subject to bending/torsion/compressive forces o Has Haversian system structure - Trabecular/Cancellous o Metaphysis and epiphysis of long bone, cuboid bone o 3D branching lattice formed along areas of mechanical stress o 50-90% porosity, 15-25% calcified (1/4 mass of compact bone) o High surface area high cellular activity (has marrow) o Metabolic turnover 8x greater than cortical bone o Subject to compressive forces o Trabeculae lined with endosteum (contains osteoprogenitors, osteoblasts, osteoclasts) - Woven Bone o Immature/primitive, rapidly growing . Normally – embryos, newborns, fracture calluses, metaphyseal region of bone . Abnormally – tumors, osteogenesis imperfecta, Pagetic bone o Disorganized, no uniform orientation of collagen fibers, coarse fibers, cells randomly arranged, varying mineral content, isotropic mechanical behavior (behavior the same no matter direction of applied force) - Lamellar Bone o Mature bone, remodeling of woven -
Oral Pigmented Lesions from Brazil
Med Oral Patol Oral Cir Bucal. 2021 May 1;26 (3):e284-91. Oral pigmented lesions from Brazil Journal section: Oral Medicine and Pathology doi:10.4317/medoral.24168 Publication Types: Research Oral pigmented lesions: a retrospective analysis from Brazil Danielle Mendes da Silva Albuquerque 1, John Lennon Silva Cunha 2, Ana Luiza Oliveira Corrêa Roza 3, Lady Paola Aristizabal Arboleda 3, Alan Roger Santos-Silva 4, Marcio Ajudarte Lopes 4, Pablo Agustin Vargas 4, Jacks Jorge 4, Oslei Paes de Almeida 4, Aline Corrêa Abrahão 5, Michelle Agostini 5, Mário José Romañach 5, Bruno Augusto Benevenuto de Andrade 5 1 DDS, MSc. Department of Oral Diagnosis and Pathology, School of Dentistry, Federal University of Rio de Janeiro (UFRJ), Brazil 2 DDS, MSc student. Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas (UNICAMP), SP, Brazil 3 DDS, PhD student. Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas (UNICAMP), SP, Brazil 4 DDS, PhD. Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas (UNICAMP), SP, Brazil 5 DDS, PhD. Department of Oral Diagnosis and Pathology, School of Dentistry, Federal University of Rio de Janeiro (UFRJ), Brazil Correspondence: Department of Oral Diagnosis and Pathology Federal University of Rio de Janeiro School of Dentistry Av. Carlos Chagas Filho 373, Prédio do CCS, Bloco K, 2° andar, Sala 56 Ilha da Cidade Universitária, Rio de Janeiro/RJ. 21.941-902 [email protected] Received: 16/07/2020 Albuquerque DMdS, Cunha JLS, Roza ALOC, Arboleda LPA, Santos- Accepted: 24/08/2020 Silva AR, Lopes MA, et al. Oral pigmented lesions: a retrospective analysis from Brazil. -
Basic Histology (23 Questions): Oral Histology (16 Questions
Board Question Breakdown (Anatomic Sciences section) The Anatomic Sciences portion of part I of the Dental Board exams consists of 100 test items. They are broken up into the following distribution: Gross Anatomy (50 questions): Head - 28 questions broken down in this fashion: - Oral cavity - 6 questions - Extraoral structures - 12 questions - Osteology - 6 questions - TMJ and muscles of mastication - 4 questions Neck - 5 questions Upper Limb - 3 questions Thoracic cavity - 5 questions Abdominopelvic cavity - 2 questions Neuroanatomy (CNS, ANS +) - 7 questions Basic Histology (23 questions): Ultrastructure (cell organelles) - 4 questions Basic tissues - 4 questions Bone, cartilage & joints - 3 questions Lymphatic & circulatory systems - 3 questions Endocrine system - 2 questions Respiratory system - 1 question Gastrointestinal system - 3 questions Genitouirinary systems - (reproductive & urinary) 2 questions Integument - 1 question Oral Histology (16 questions): Tooth & supporting structures - 9 questions Soft oral tissues (including dentin) - 5 questions Temporomandibular joint - 2 questions Developmental Biology (11 questions): Osteogenesis (bone formation) - 2 questions Tooth development, eruption & movement - 4 questions General embryology - 2 questions 2 National Board Part 1: Review questions for histology/oral histology (Answers follow at the end) 1. Normally most of the circulating white blood cells are a. basophilic leukocytes b. monocytes c. lymphocytes d. eosinophilic leukocytes e. neutrophilic leukocytes 2. Blood platelets are products of a. osteoclasts b. basophils c. red blood cells d. plasma cells e. megakaryocytes 3. Bacteria are frequently ingested by a. neutrophilic leukocytes b. basophilic leukocytes c. mast cells d. small lymphocytes e. fibrocytes 4. It is believed that worn out red cells are normally destroyed in the spleen by a. neutrophils b. -
Unusual Imaging Features of Dentigerous Cyst: a Case Report
dentistry journal Case Report Unusual Imaging Features of Dentigerous Cyst: A Case Report Carla Patrícia Martinelli-Kläy 1,2,*, Celso Ricardo Martinelli 2, Celso Martinelli 2, Henrique Roberto Macedo 2 and Tommaso Lombardi 1 1 Laboratory of Oral & Maxillofacial Pathology, Oral Medicine and Oral and Maxillofacial Pathology Unit, Division of Oral Maxillofacial Surgery, Department of Surgery, Geneva University Hospitals, University of Geneva, 1211 Geneva, Switzerland 2 Centre for Diagnosis and Treatment of Oral Diseases, Ribeirão Preto 14025-250, Brazil * Correspondence: [email protected]; Tel.: +41-22-379-4034 Received: 26 March 2019; Accepted: 5 July 2019; Published: 1 August 2019 Abstract: Dentigerous cysts (DC) are cystic lesions radiographically represented by a well-defined unilocular radiolucent area involving an impacted tooth crown. We present an unusual radiographic feature of dentigerous cyst related to the impacted mandibular right second molar, in a 16-year-old patient, which suggested an ameloblastoma or odontogenic keratocyst (OKC) because of its multilocular appearance seen on the panoramic radiography. A multi-slice computed tomography (MSCT), however, revealed a unilocular lesion without septations, with an attenuation coefficient from 3.9 to 22.9 HU suggesting a cystic lesion. Due to its extension, a marsupialization was performed together with the histopathological analysis of the fragment removed which suggested a dentigerous cyst. Nine months later, the lesion was reduced in size and then totally excised. The impacted mandibular right second molar was also extracted. Histopathological examination confirmed the diagnosis of a dentigerous cyst. One year later, the panoramic radiography showed a complete mandible bone healing. Large dentigerous cysts can sometimes suggest other more aggressive pathologies. -
Occurence of Lesions, Abnormalities and Dentomaxillofacial Changes Observed in 1937 Digital Panoramic Radiography
Occurence of lesions, abnormalities and dentomaxillofacial changes observed in 1937 digital panoramic radiography Ocorrência de lesões, anomalias e alterações dento-maxilo-facial observados em 1937 radiografias panorâmicas digitais. Felipe Paes Varoli2, Luiza Verônica Warmling1, Karina Cecília Panelli Santos1, Jefferson Xavier Oliveira1 School of Dentistry, University of São Paulo, São Paulo-SP, Brazil; School of Dentistry, University Paulista, São Paulo-SP, Brazil Abstract Objective – Radiographic examination is the most affordable and widely used complementary examination in dentistry. Recently, tech- niques for digital panoramic radiography have been developed. Methods – A total of 1937 panoramic radiographies were evaluated in this study, the female group has accounted for the most of the sample: 1090 (56.3%) in comparison to 847 (43.7%) men. The patients were not identified, and data have only included gender, age, main injuries, anomalies and alterations at maxillofacial region or adjacent structures. Unusual injuries or doubtful diagnosis were excluded. Results – The most common injuries and alterations that were found in this study were teeth absence / anodontia, extrusion / inclination / migration / transposition / rotation, image suggestive of carious lesions and periapical lesions. The injuries and anomalies less common were condyle alteration, hypercementosis, mandible fracture, odontoma, dentigerous cyst, odontogenic keratocyst, periapical cement osseous dysplasia, foreign body, cleft palate and surgical fixation. Conclusions – Digital panoramic radiography is of the great value for lesions and anomalies diagnosis, as a complement of clinical prac- tice. This study reports as the most common alterations teeth absence / anodontia, teeth extrusion / inclination / migration/ transposition/ rotation, image suggestive of carious lesions and periapical lesions, which were predominant in the female group. -
Oral Hard Tissue Lesions: a Radiographic Diagnostic Decision Tree
Scientific Foundation SPIROSKI, Skopje, Republic of Macedonia Open Access Macedonian Journal of Medical Sciences. 2020 Aug 25; 8(F):180-196. https://doi.org/10.3889/oamjms.2020.4722 eISSN: 1857-9655 Category: F - Review Articles Section: Narrative Review Article Oral Hard Tissue Lesions: A Radiographic Diagnostic Decision Tree Hamed Mortazavi1*, Yaser Safi2, Somayeh Rahmani1, Kosar Rezaiefar3 1Department of Oral Medicine, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran; 2Department of Oral and Maxillofacial Radiology, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran; 3Department of Oral Medicine, School of Dentistry, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran Abstract Edited by: Filip Koneski BACKGROUND: Focusing on history taking and an analytical approach to patient’s radiographs, help to narrow the Citation: Mortazavi H , Safi Y, Rahmani S, Rezaiefar K. Oral Hard Tissue Lesions: A Radiographic Diagnostic differential diagnoses. Decision Tree. Open Access Maced J Med Sci. 2020 Aug 25; 8(F):180-196. AIM: This narrative review article aimed to introduce an updated radiographical diagnostic decision tree for oral hard https://doi.org/10.3889/oamjms.2020.4722 tissue lesions according to their radiographic features. Keywords: Radiolucent; Radiopaque; Maxilla; Mandible; Odontogenic; Nonodontogenic METHODS: General search engines and specialized databases including PubMed, PubMed Central, Scopus, *Correspondence: Hamed Mortazavi, Department of Oral Medicine,