A retrospective review of literature was carried out to determine the classification, prevalence, etiology, associated anomalies, clinical implications and treatment options for hypodontia. Many methods of classification have been reported in the literature. Some researchers have classified hypodontia as isolated family form or as an inherited form; others have defined the congenital absence of teeth according to the number of missing teeth and yet classified hypodontia according to the severity of the condition. The prevalence of hypodontia in the primary dentition is found to be very low whereas the occurrence of tooth agenesis varies in the permanent dentition based on ethnic and sex differences. The tooth most commonly found to be missing is the third molar. With regard to the remaining 28 teeth, metaanalysis has revealed that the teeth most commonly affected are the mandibular second premolars, maxillary lateral incisors, maxillary second premolars and the mandibular incisors. From the literature it is evident that the etiology of hypodontia is varied and that genetic, epigenetic and environmental factors may be contributory factors. Tooth anomalies reported in the literature to be associated with hypodontia, include microdontia, canine impaction, taurodontism, transposition and rotation of teeth, and hypoplastic alveolar bone. Researchers have suggested that clinical management of hypodontia requires careful multidisciplinary planning and has financial implications. The suggested members of the team should include general dental practitioners, dental nurses, orthodontists, pediatric dentists, prosthodontists, oral and maxillofacial surgeons, specialist laboratory technicians, clinical psychologists, clinical geneticists, dermatologists, speech and language therapists.
Ellis-van Creveld syndrome (EVC) is a very rare genetic disorder that affects various tissues of ectodermal and mesodermal origin; patients with EVC present with typical oral deficiencies. The affected individuals are quite young at the time of oral evaluation. It is, therefore, important that these individuals are diagnosed and receive dental treatment at an early age for their physiologic and psychosocial well-being. Albeit there are numerous articles penned on the EVC, the treatise from an oral perspective is inadequate, covering only oral exhibitions and the preventive treatments. This article reviews the literature and serves as the first disquisition for oral rehabilitation of an EVC patient utilizing surgical, orthodontic, restorative, and prosthodontic management.
Palatal rugae (PR) are situated in the anterior part of the hard palate and possess unique and stable characteristics that can be used in human identification. Their pattern of orientation is established early in life and remains stable thereafter. The purposes of this study were to convert PRP into alphanumeric codes in order to generate scanable Quick Response (QR) codes, to demonstrate uniqueness of PRP using the codes in the study population, and to determine the sexual dimorphism of PRP in the study population.
Materials and methods
Orthodontic dental casts of 256 Saudi male and female patients were photographed after ensuring standardization. Individual rugae characteristics, strength and their displacement from incisive papilla and midpalatine raphe were recorded in the form of an alphanumeric code which was subsequently converted to a QR code. Computer assisted check was performed for possible match in the 256 alpha numeric codes while QR codes were scanned using a bar code scanner to determine uniqueness. Sexual dimorphism of palatal rugae (PR) was also analysed.
All alphanumeric codes of the study population were unique. Mean number of PR in males and females differed significantly (P = 0.0001). Differences in rugae characteristics and strengths in males and females were also present.
The alphanumeric and QR code of the rugae pattern are unique for each individual and can be used for digital record keeping and person identification. A high degree of sexual dimorphism in PR exists in the studied Arab population studied.
AIM:To assess the perspective of dental students and interns towards various aspects of Cone Beam Computed Tomography (CBCT). MATERIALS AND METHODS: A cross-sectional study was carried out among 5 th year students, final year students and interns of College of Dentistry, King Khalid University, Abha. A convenient sample of 380 students was taken for the study. A valid, reliable slightly modified questionnaire (Appendix 1) having 11-items was included in the questionnaire. The two sections of the questionnaire consisted of questions related to demographic data such as gender and academic level in the first and questions related to Cone Beam Computed Tomography (CBCT) in the second section. Students who were aware of CBCT use in dentistry were included in the study whereas those unaware of its use were excluded from the study. RESULTS: When subjects were asked whether they were aware of Cone Beam Computed Tomography (CBCT) use specifically for dentistry; 68% were aware while 32% did not know about it. The findings of our study showed that 49.48%, 58.7% and 80% of the 5 th year, final year students and interns, respectively; believed that lower radiation dose was the most important advantage of using CBCT over medical CT. Majority of the study subjects would choose CBCT in procedures like implants, extraction of impacted teeth, evaluation of patient's cysts/tumors and orthodontic assessment. On comparing the responses of the three groups, a statistically significant difference was found. CONCLUSION: Although a majority of students and interns
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