Times of eruption of third molars were studied in rural Nigerian adolescents--125 males and 133 females. Results of this study showed that the average age for the initial eruption of third molars was 15 years in male subjects and 13 years for female subjects. The incidence of eruption showed a steep rise after the age of 16 years for male subjects and 14 years for female subjects. By the age of...

INTRODUCTION Having knowledge about the anatomy of root canal system is essential for success of endodontic treatment. The present study used cone-beam computed tomography (CBCT), to evaluate the prevalence of third root in mandibular first molars in a selected Iranian population. METHODS AND MATERIALS A total of 386 CBCT images from subjects referred to oral and maxillofacial radiology depar...

OBJECTIVE The primary aim of the study was to generate new prediction equations for the estimation of maxillary and mandibular canine and premolar widths based on mandibular incisors and first permanent molar widths. METHODS A total of 2,340 calculations (768 based on the sum of mandibular incisor and first permanent molar widths, and 1,572 based on the maxillary and mandibular canine and pre...

OBJECTIVE To investigate the class, type, position, diagnosis and most common procedures used in the surgical removal of third molars, and evaluate the sex and age distribution in a representative sample of Mexican patients. STUDY DESIGN A retrospective descriptive study was made covering the period 1993-2008 in relation to 9148 extracted third molars in 3206 patients treated in the Dental Sc...

UNLABELLED Root canal anatomical complexities, such as isthmus, may limit the action of the endodontic instruments, irrigant solutions and intracanal medications, leading to endodontic treatment failure. OBJECTIVES This in vitro study assessed the type, position and incidence of isthmus in human permanent molars. MATERIAL AND METHODS One hundred and twenty eight upper and lower first and se...

BACKGROUND Mandibular first molars typically have two roots but sometimes a supernumerary root presents distolingually called as radix entomolaris (RE). AIM The present study evaluated the prevalence of permanent mandibular first molars featuring a distolingual root in Haryana (North India). MATERIALS AND METHODS Five hundred patients possessing bilateral mandibular first molars were select...

Increasing lower dental arch crowding with the age is a recognized clinical problem, and one that has become more apparent in recent years as more adults retain their teeth longer. One of the theories is that the erupting third molars push anterior teeth forward and cause their crowding. On the other hand, a number of studies found no correlation between lower third molars and lower incisor cro...

OBJECTIVE To investigate the prevalence of impaction of permanent mandibular second molars and associated dental and radiographic characteristics of Chinese children in Hong Kong. MATERIALS AND METHODS Dental and radiographic records of a group of Chinese schoolchildren were studied retrospectively. Cases of impaction of 1 or both permanent mandibular second molars were selected. Demographic ...

INTRODUCTION It is now possible to predictably move maxillary molars distally in nongrowing patients with the skeletal anchorage system (SAS) and to improve malocclusions without having to extract the premolars and regardless of the patient's compliance. The purposes of this study were to investigate the amount of distal movement of the maxillary first molars, the type of movement, the differen...

Introduction: The prevalence of pulp stones varies, depending on the study type, design and radiographic technique employed. Pulp stones more often occur in molars than in premolars and incisive. The intention of the study is to determine the prevalence of dental pulp stones in molars occurrence in accordance with the side. Materials and Methods: In this study were included random samples 150 p...