scholarly journals PECULIARITIES OF DETERMINING INDIVIDUAL AND SEXUAL VARIABILITY OF THIRD MOLARS IN PEOPLE OF THE FIRST PERIOD OF MATURITY

2019 ◽  
Vol 19 (4) ◽  
pp. 69-72
Author(s):  
R. V. Talash
Keyword(s):  
Relevant Literature ◽  
Individual Variability ◽  
Permanent Teeth ◽  
Third Molars ◽  
Short Root ◽  
The Third ◽  
Theoretical Synthesis ◽  
Longitudinal Size ◽  
Wisdom Teeth ◽  
The Individual

The article presents a theoretical synthesis and a new solution of the scientific problem, which consists in determining the sexual and individual polymorphism of third molars through the age aspect. The review of the relevant literature, the results obtained by analysing orthopantograms of people at the first period of adulthood, and studying randomly selected third molars removed for various clinical reasons (more than 140 samples) are presented. It has been shown that erupted third molars considerably vary in size and shape that is due to different combinations of configurational relationship between the crown and root parts. This depends on the location of opposing teeth in the dentition and sex as well, but does not correlate with age. Moreover, the entire range of individual and sexual variability of the third molars is limited by two extreme forms: very large teeth with long divided roots or with a quadratubercular crown, which are not significantly different from typical molars, and very small analogues with one fused root section, the crowns of which resemble small permanent teeth. Between these forms all other are distributed and most numerous types we called as intermediate. The data analyzed indicate that the individual variability of the size of the teeth in length depends entirely on the length of their root sections. It has been established that, relative to the crown-root index, there are three forms distinguished among the third molars: long-root; medium root and short root. At the same time, long-root forms are found mainly among male teeth, mid-root forms are more characteristic of female wisdom teeth, and short-root forms of third molars do not show a sex difference. The results obtained demonstrate that the orthopantogram of the dentofacial system in humans (aged 22 to 35 years) reliably reveals an inverse relationship between the longitudinal size and the term of eruption of the third molars. The systematic approach used in the work made it possible to bring the varied polymorphism of the third molars into a certain order, highlighting the most indicative features for their classification.

Non-syndromic oligodontia in permanent dentition: a rare case report

2013 ◽  
Vol 9 (1) ◽  
Author(s):  
Parampreet Pannu ◽  
Virat Galhotra ◽  
Pooja Ahluwalia ◽  
Ramandeep Singh Gambhir
Keyword(s):  
Case Report ◽  
Self Esteem ◽  
Permanent Dentition ◽  
Permanent Teeth ◽  
Third Molars ◽  
Prosthetic Rehabilitation ◽  
Unique Case ◽  
Present Case Report ◽  
The Third ◽  
Rare Case Report

Objective: Tooth agenesis is one of the most common congenital anomalies seen in humans. Although ab¬sence of one or more teeth is common, absence of multiple teeth is rare. Oligodontia is a rare developmental anomaly, involving agenesis of six or more permanent teeth, excluding the third molars. The reported preva¬lence of oligodontia in permanent dentition is 0.14%. Oligodontia can be presented as an isolated condition or as a part of a syndrome. Discussion: The present case report highlights a unique case of non-syndromic oligodontia, with agenesis of four permanent incisors, left permanent canine and right second premolar in the mandibular arch and its management with a novel fixed functional prosthetic appliance. Conclusion: Prosthetic rehabilitation is an urgent need for these kind of patients so that they do not suffer from mastica¬tory and esthetic problems which can eventually lower the self esteem of individuals.

scholarly journals Bilateral Hypodontia of Mandibular Second Premolars and Lateral Incisors in a Nonsyndromic Patient: A Rare Case Report

2016 ◽  
Vol 1 (1) ◽  
pp. 24-26
Author(s):  
Shakun Kanjani
Keyword(s):  
Case Report ◽  
Rare Case ◽  
Permanent Teeth ◽  
Rare Occurrence ◽  
Third Molars ◽  
Missing Teeth ◽  
Dental Anomaly ◽  
Mahatma Gandhi ◽  
The Third ◽  
Rare Case Report

ABSTRACT Hypodontia is the term used to describe the developmental absence of one or more primary or permanent teeth, excluding the third molars. It is the most commonly occurring developmental dental anomaly and can be a challenge to manage clinically. Hypodontia can occur in association with syndrome or it may occur in nonsyndromic patient. Bilateral occurrence is common but it is very rare to see two bilateral congenital missing teeth in a nonsyndromic patient. This case report presents a rare occurrence of congenital bilateral missing mandibular second premolars and mandibular lateral incisors in a nonsyndromic patient. How to cite this article Agarwal N, Chaturvedy S, Marwah N, Mishra P, Kanjani S. Bilateral Hypodontia of Mandibular Second Premolars and Lateral Incisors in a Nonsyndromic Patient: A Rare Case Report. J Mahatma Gandhi Univ Med Sci Tech 2016;1(1):24-26.

NICE and the third molar debate

2013 ◽  
Vol 4 (4) ◽  
pp. 166-171 ◽  
Author(s):  
Louis McArdle
Keyword(s):  
Third Molar ◽  
Clinical Indication ◽  
Third Molars ◽  
Clinical Guidance ◽  
The Third ◽  
Nice Guidance ◽  
Wisdom Teeth ◽  
The Uk ◽  
Disease Free

In 2000 the National Institute for Health and Care Excellence (NICE) published clinical guidance that advised against the removal of disease-free wisdom teeth (prophylactic removal).1 This was mainly driven by the perception in the UK that up to 44% of all removed third molars were disease free and consequently had no clinical indication for removal.1,2 But does the NICE guidance, which has become akin to scripture on this issue, have everything right?.

scholarly journals Correlation Between Corpus Callosum Shape and Craniometric Measurements According to Mri Data

2021 ◽  
Vol 12 (3) ◽  
pp. 01-10
Author(s):  
Olga Boiagina ◽  
Oleksandr Stepanenko ◽  
Anastasiia Lebedieva
Keyword(s):  
Aspect Ratio ◽  
Corpus Callosum ◽  
Individual Variability ◽  
Morphometric Study ◽  
Longitudinal Size ◽  
Two Samples ◽  
The Individual ◽  
Second Period ◽  
Bulge Height ◽  
Cranial Shape

The correlation between the cranial height and the height of the corpus callosum trunk bulge, and the relationship between the corpus callosum shape and the cranial shape have not been studied. The purpose of the article was to determine the individual variability of the corpus callosum height and shape of adults, and their dependence on the cranial height and shape. The material was two samples from a series of MR scans of the head of men and women of the second period of adulthood (19 variations in each group) without the central nervous system pathology. Magnetic resonance tomographic scanner Magnetom C was used for obtaining MRI images. Morphometric study was conducted using RadiAnt Dicom Viewer software on MR scans performed in the sagittal area in T1- and T2-weighted images modes. According to the findings, the height of the corpus callosum trunk bulge of men is on average – 26.1 ± 2.8 mm, women – 25.2 ± 2.6 mm, and the neurocranium height – 150.4 ± 6.9 mm and 140.2 ± 4.2 mm, respectively. Wherein the aspect ratio of the neurocranium height to the corpus callosum trunk bulge height in men is 5.8 ± 0.7, in women – 5.6 ± 0.5. The aspect ratio of the corpus callosum longitudinal size along the constricting chord to its trunk bulge height in men is on average 2.8 ± 0.3, in women – 2.7 ± 0.3. The absence of correlation between the cranial height and the corpus callosum trunk bulge height, and the absence of correlation between the corpus callosum shape and cranial shape in people of the second period of adulthood have been concluded.

Meta-Analysis of Observational Studies on the Most Commonly Missing Permanent Dentition (Excluding the Third Molars) in Non-Syndromic Dental Patients or Randomly-Selected Subjects, and the Factors Affecting the Observed Rates

2015 ◽  
Vol 39 (3) ◽  
pp. 198-207 ◽  
Author(s):  
V Rakhshan
Keyword(s):  
Meta Analysis ◽  
Permanent Teeth ◽  
Third Molars ◽  
Missing Teeth ◽  
Factors Affecting ◽  
Dental Patients ◽  
The Third ◽  
Significant Publication Bias ◽  
Missing Tooth

Purpose: The aim of this study was to summarize the literature on the most frequently missing permanent teeth excluding the third molars. Study design: A search was conducted to find all the available literature (in various scientific and general databases) regarding the most commonly missing teeth with respect to ethnicity and time, as well as factors biasing this outcome. Quality assessment was done to exclude studies with inconsistent information, poor designs, or data pertaining to syndromic cases or the third molars. The role of biasing factors was as well quantitatively assessed using statistical analyses [Q-test, Egger regression, Spearman correlation coefficient, multiple linear regression, Welch t-test] (α=0.05). Results: A total of 81 reports was included. The meta-sample was heterogeneous (P=0.000, Q-test). No significant publication bias was detected (P>0.1, Egger regression). The mandibular second premolar was reported as the most commonly missing tooth in most studies, followed by the maxillary lateral (the most commonly missing in the rest). In terms of the missing share of each tooth percent of all missing teeth, the mandibular second premolar and incisors are more likely to be absent, followed by the maxillary second premolar and lateral. The absence of different teeth can be affected by the ethnicity, sample types (epidemiological or dental patients), sample sizes (only in the case of bimaxillary second premolars), and the minimum ages of pooled subjects (only in the case of the maxillary lateral and the mandibular second premolar). Conclusions: Since enrolling younger patients can bias the results, older patients should be sampled.

scholarly journals Dental Number Anomalies and Their Prevalence According To Gender and Jaw in School Children 7 To 14 Years

2018 ◽  
Vol 6 (5) ◽  
pp. 867-873
Author(s):  
Milaim Sejdini ◽  
Sabetim Çerkezi
Keyword(s):  
Primary Schools ◽  
Statistical Significance ◽  
Third Molars ◽  
Missing Teeth ◽  
The Third ◽  
Significant Difference ◽  
Typical Shape ◽  
The Individual ◽  
Professional People ◽  
Descriptive Statistical Analysis

OBJECTIVES: This study aimed to find the prevalence of Hypodontia and Hyperdontia in different ethnicities in patients from 7 to 14 years old.MATERIAL AND METHODS: A group of 520 children were included aged 7 to 14 years, only the children who went to primary schools. Controls were performed by professional people to preserve the criteria of orthodontic abnormalities evaluation. The data were recorded in the individual card specially formulated for this research and all the patients suspected for hypodontia and hyperdontia the orthopantomography for confirmation was made. The data were analysed using descriptive statistical analysis using c2 test for the significant difference for p ˂ 0.05 and Fisher test for p < 0.05.RESULTS: Hypodontia, not counting the patients with missing third molars was found in 18 patients researched or 3.46%. The most commonly missing teeth were the second lower premolars, the second upper premolars, second upper lateral incisors followed by the lower incisors. Hyperdontia not including the third molars was found in 4 cases of the participants or 0.76% from which the most frequent atypical tooth mesiodens and one case of bilateral hypodontia of a lateral upper incisor with typical shape and size. But there were no significant differences when tested between genders and jaws.CONCLUSION: The prevalence we found is similar to the prevalence in the region. Our findings indicate that there is a difference between the genders in the prevalence of hypodontia, but without statistical significance, while for hyperdontia we can’t see such a difference between the sexes.

scholarly journals Prosthodontic Management of a Patient with Oligodontia: A Case Report

2014 ◽  
Vol 18 (1) ◽  
pp. 52-56
Author(s):  
Özlem Malkondu ◽  
Mehmet Baybora Kayahan ◽  
Korkmaz Sayınsu ◽  
Kılıçarslan Argın ◽  
Ender Kazazoğlu
Keyword(s):  
Case Report ◽  
Congenital Absence ◽  
Permanent Teeth ◽  
Third Molars ◽  
Dental Anomaly ◽  
The Third ◽  
Aesthetic Results

Abstract Oligodontia or severe hypodontia is a rare developmental dental anomaly which is described as congenital absence of 6 or more teeth excluding the third molars. In this case report, the treatment of a 31-yearold woman with congenital absence of 9 permanent teeth is described. The treatment with occlusal appliance and fixed a partial dentures ended up in functional and aesthetic results.

scholarly journals A Rare case report of Oligodontia in the permanent dentition

2014 ◽  
Vol 13 (4) ◽  
pp. 488-491
Author(s):  
Suresh Ramamurthy
Keyword(s):  
Rare Case ◽  
Medical Science ◽  
Complex Problem ◽  
Permanent Teeth ◽  
Third Molars ◽  
Facial Disfigurement ◽  
The Third ◽  
Rare Case Report ◽  
Old Adult ◽  
And Function

Oligodontia is a rare congential disorder of dental anomalies that can occur either as an isolated finding or as part of a syndrome. It is defined as agenesis of six or more teeth excluding the third molars. It is commonly seen in permanent than in deciduous dentition. Patients suffering from oligodontia may present with complex problem such as dental and facial disfigurement. Management of those cases generally requires multidisciplinary approach to restore esthetic and function. This paper reports a rare case of oligodontia in an 18 year old adult female patient who has been missing eight permanent teeth excluding the third molars, clinically and radiographically. DOI: http://dx.doi.org/10.3329/bjms.v13i4.16048 Bangladesh Journal of Medical Science Vol.13(4) 2014 p.488-491

scholarly journals Suspected Non-Syndromic Oligodontia – A Rare Case with 13 Agenesis

2019 ◽  
Vol 53 (6) ◽  
Author(s):  
Dian Lupita Sari ◽  
Seno Pradopo ◽  
Sindy Cornelia Nelwan ◽  
Haryono Utomo ◽  
Udijanto Tedjosasongko
Keyword(s):  
Orthodontic Treatment ◽  
Rare Case ◽  
Process Management ◽  
Treatment Plan ◽  
Permanent Teeth ◽  
Third Molars ◽  
Oral Function ◽  
The Third ◽  
Congenital Condition

Oligodontia is a condition in which the patient has more than six ageneses, excluding the third molars. Whereas the absence of one tooth is quite common, oligodontia is a rare congenital condition that can happen with or without the syndrome. The condition happens due to disturbances during odontogenesis process. Management of oligodontia is a long-term process, and it involves prosthetic, restorative, and orthodontic treatment to support the oral function and esthetic of the patient. This article aims to report a rare case of agenesis of 13 permanent teeth (excluding third molars) in an 11-year-old girl and her treatment plan.

scholarly journals INTRODUCTION TO ORTHODONTIC EDUCATION IN BULGARIA OF DIGITAL TECHNOLOGIES AND 3D ARCHIVING

2019 ◽  
Vol 31 (4) ◽  
pp. 873-877
Author(s):  
Sandra Atanasova ◽  
Sofija Carceva Salja ◽  
Ljubica Prosheva
Keyword(s):  
Orthodontic Treatment ◽  
Third Molar ◽  
Permanent Teeth ◽  
Individual Treatment ◽  
Dental Arch ◽  
Third Molars ◽  
Treatment Needs ◽  
Active Growth ◽  
Mandibular Incisor ◽  
The Third

Orthodontic treatment, especially during the period of active growth, can significantly affect the development of the jaws and teeth. Treatment with extraction of molars is more complicated because the space that needs to be closed is larger than the premolar spaces and the time of treatment will be longer. However, in cases where we have a lack of space, teeth protrusion or dental asymmetry, and the extraction of permanent teeth is indicated, the damaged molars should be the first option for extraction when premolars are in better condition. The third molars in different ways are affected by orthodontic therapy. One of them is orthodontic treatment by applying the extraction of the third molars, this situation being widely explored. Extraction of third molar for orthodontic reasons is justified when it prevents the eruption of the second molar or otherwise affects the other teeth. The indications of extraction and selection of teeth to be removed depend on the specific aspects of malocclusion. Premolars are teeth that are usually extracted from orthodontic reasons, but this is not the rule and depends on individual treatment needs. The decision to correct the malocclusion with teeth extraction should be based on the ratio of the size of the dental arch with the size of the teeth, facial appearance and other factors arising from the diagnosis itself. Indications for extraction of the third molars during orthodontic treatment are: mandibular incisor crowding, if they in some way constitute a obstruction of orthodontic treatment as well as preparation for orthognathic surgery. The success of an orthodontic treatment involving the extraction of molars is directly related to the patient complaints and psychological profile, the absence of diseases and skeletal discrepancies, the professional experience as well as the fact whether the patient underwent previous orthodontic treatment with extraction. Patients with partially or completely non-erupted teeth are significantly more likely to have certain consequences: before, during or after the orthodontic treatment. Therefore, orthodontists need to raise patient awareness of these consequences in the context of orthodontic treatment.

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