PURPOSE To review the literature associated with displaced lower third molars, to introduce a modified method of retrieval of an accidentally displaced lower third molar tooth or root fragment, and to recommend rational guidelines for management. MATERIALS AND METHODS A review of the literature was performed to record the types of displacements, patient's personal data, imaging used, and the ...

missing of mandibular second premolar is one of the most common types of tooth agenesis. in such cases, maintenance of the primary second molar, if possible at all, can prevent many treatment procedures in future. the present case report represents the endodontic management of a necrotic left mandibular primary second molar that had developed an abscess. considering the missing of the permanent...

Objectives: To assess the prevalence of different pattern of impacted teeth. Materials & Method: A retrospective study of the digital orthopantomograms of 500 patients from Dept of Oral & Maxillofacial Surgery, Rajarajeswari Dental College & Hospital, Bangalore was carried out. The investigation was done to relate the impaction to the angulation of tooth, age, and sex. Result: Panoramic radiogr...

The dentino-enamel junction (DEJ) connects enamel, that covers the outer surface of a tooth, to a thicker underlying dentin. The DEJ is a critical interface that permits joining these materials that have widely dissimilar mechanical properties. AFM-based nanoindentation and Raman microspectroscopy were used to define the width and composition of human molar DEJ. Indentation elastic modulus and ...

BACKGROUND Coronectomy is an alternative to complete removal of an impacted mandibular third molar. Most authors have recommended coronectomy to prevent damage to the inferior alveolar nerve during surgical extraction of lower third molars. The present study offers a systematic review and metaanalysis of the coronectomy technique. MATERIAL AND METHODS A systematic review and meta-analysis was...

ackground and aim: It is important to evaluate the effect of the type of filling material on deformation and strength of tooth after filling and also the effect of filling depth on quality of restoration of a decayed tooth. Material and Methods: The Orthopantomogram (OPG) of the first and second molars of a 28-year-old man was made and the teeth were 3D modeled. The stress-deformation analysis ...

The impaction of lower second molars, given that its incidence is 0.03 to 0.21%, is a rare complication in tooth eruption. It has been detected more often in unilateral form than bilateral and is more common in the mandible than in the maxillary. It has a slight predilection for males, and mesial inclination is more usual. A wide variety of therapeutic approaches have been published, basically ...

The dilated odontome is the most severe form of the dens invaginatus (dens in dente), which is extremely rare in the mandible, especially in the molar region. A case is reported in a 28-year-old female with an unusual ringlike radiopaque appearance of the mandibular third right molar on panoramic x-ray. CT scan findings were suggestive that the intraosseous circular radiopaque formation was a d...

Impaction of the lower second molar is not a common problem, but it is very challenging for both orthodontist and oral surgeon. Treatment options depend on the degree of tooth inclination, the position of the third molars, and the desired type of movement, which may be surgical and/or orthodontic in nature. A good treatment alternative is surgical uncovering with orthodontically-assisted erupti...

Objectives: The prevalence of impacted teeth fluctuates across various ethnicities and geographical regions. The aim of the present study was to evaluate the prevalence and patterns of impacted teeth among patients living in the central part of Iran. Methods: This retrospective study was conducted on 3632 patients within the age group of 17-30 years. The frequency and pattern of the impaction w...