OBJECTIVES A study was undertaken to assess the prevalence of taurodontism in premolars in a group of adult dental patients in Trinidad and Tobago since there is no such data available for the region. METHODS Periapical and orthopantomograms of 1090 randomly selected patients were examined for the presence of an apically displaced pulp chamber without the usual constriction at the cementoenam...

Aim This study’s aim was to investigate the relationship between deep caries, with pulp necrosis of primary molars, and the pattern of eruption of the corresponding premolars. Methods A total of 126 children were followed up to the completion of premolar eruption over an 8-year period. Criteria for case selection included arch length adequacy and absence of abnormally large teeth. Primary molar...

OBJECTIVE To investigate the anatomic symmetry of maxillary and mandibular posteriors in Indian subpopulation using cone beam computed tomography (CBCT). MATERIALS AND METHODS CBCT images of 246 patients that had at least one noncarious, posterior tooth free of restorations in each quadrant were enrolled for retrospective analysis. A total of 3015 teeth (811 maxillary premolars, 845 mandibula...

Mandibular second premolars and maxillary central incisors usually have one root, one canal, and one apical foramen. However, some studies have revealed anatomic variations in these teeth. The aim of the present study was to investigate such variations in canal configuration, foramina, lateral and accessory canals and apical deltas in the root apex of human maxillary central incisors and mandib...

The objective of this study was to determine the relative prevalence of caries in first and second premolars as well as maxillo-mandibulo-quadrant distribution of caries among the premolars. It was also aimed at comparing the patterns of caries distribution in first and second premolars with those of the first and second permanent molars based on previous studies. The treatment records of patie...

presence of extra roots and canals should be considered before initiation of root canal treatment for the success of endodontic treatment. a mandibular second premolar with three separate roots is very rare and its prevalence has been reported to be around 0.1%. this case report explains non-surgical endodontic treatment of a mandibular second premolar with three separate roots and three separa...

The aim of the study was to determine number and anatomical configuration roots root canals maxillary first second premolars using cone-beam computed tomography scans. n273 CBCT scans were evaluated, obtaining a sample 592 premolars. Root canal anatomy categorized Ahmed´s classification. Data analyzed Pearson’s Chi-squared test. Two present on 157 premolars, one in 132 three 17. Second prese...

The incidence of nonsyndromic supernumerary premolars is rare. Supernumerary premolars are likely to undergo pathological changes. The most commonly encountered complications with these teeth are dentigerous cyst and root resorption of the adjacent tooth. This paper is about impacted double fused supernumerary premolars in the right mandiblular body associated with an impacted first premolar in...

Micro-computed tomography (micro-CT) was employed to relate the root surface area (RSA) to the periodontal attachment levels (PALs) of extracted premolars to diagnose periodontitis. Single-rooted human maxillary and mandibular premolars 31 and 36, respectively, were surveyed by micro-CT and its associated software. RSA levels from the 1st to 10th mm, corono-apically, were analyzed using statist...

Introduction: Bolton ratio is considered as seventh key of normal occlusion. Many orthodontic patients have to undergo premolar extractions as a part of treatment. Aims and objectives: The present study was taken up to investigate the effect of premolar extractions on Bolton’s overall ratios in a sample of north Indian population. Materials and methods: Mesiodistal tooth widths were measured on...