maxillary second molar with two palatal roots is a rare dental anatomy. the diagnosis and treatment of exceeded root may create challenge for clinicians. the authors discuss the retreatment of a maxillary second molar in which exceeded root was undiagnosed in previous treatment. the case report underlines the importance of complete knowledge about root canal morphology which achieved by careful...

a healthy female was referred to endodontic department. the referral letter from her dentist expressed that an emergency pulpotomy of tooth #27 had been carried out with probable perforation of the chamber floor which was due to the unusual anatomy of the chamber. cone-beam computed tomography (cbct) revealed that the tooth had two mesial and two distal canals. perforation site was repaired and...

AIM To describe vascular anatomy of the maxillary sinus in dentate specimens dissected from human cadavers. METHODS Twenty dentate maxillary specimens were dissected, anatomically prepared, and injected with liquid latex for a better visualization of the maxillary sinus artery. RESULTS We found an intraosseous anastomosis in 100% and an extraosseous anastomosis in 90% of the cases. The ante...

OBJECTIVE To examine the effect of bite force on the displacement and stress distribution of orthodontic mini-implants (OMIs) in the molar region according to placement site, insertion angle, and loading direction. METHODS Five finite element models were created using micro-computed tomography (microCT) images of the maxilla and mandible. OMIs were placed at one maxillary and two mandibular p...

INTRODUCTION Dental pain originating from the maxillary sinuses can pose a diagnostic problem. Periapical lesion development eliciting inflammatory changes in the mucosal lining can cause the development of a sinusitis. The purpose of this study was to describe the radiographic characteristics of odontogenic maxillary sinusitis as seen on cone-beam computed tomography (CBCT) scans and to determ...

BACKGROUND The aim of this study was to determine the effect of the maxillary posterior dentoalveolar discrepancy (MPDD) on the angulation of maxillary molars in open bite subjects. METHODS Pre-treatment lateral cephalograms of 90 young adults with skeletal open bite were examined. The sample initially included six groups categorized according to MPDD condition (present or absent) and sagitta...

The purpose of this study was to determine the relationship between the sagittal inclination of the first and second maxillary molars and the eruption of the third molars. The sample consisted of 2 groups. The subjects in the first group (n = 28) had complete normal dentitions including third molars; those in the second group (n = 32) had impacted right and left third molars. The sagittal incli...

The C shaped canal configuration is an anatomic variant most commonly seen in mandibular second molars. The presence of this configuration in a single rooted maxillary permanent first molar is rare. This case report describes the endodontic management of a single rooted infected maxillary first molar having a c shaped root canal configuration. Endodontic Treatment of Single Rooted Maxillary Fir...

Participants judged the affine equivalence of 2 simultaneously presented 4-point patterns. Performance level (d') varied between 1.5 and 2.7, depending on the information available for solving the correspondence problem (insufficient in Experiment 1a, superfluous in Experiment 1b, and minimal in Experiments 1c, 2a, 2b) and on the exposure time (unlimited in Experiments 1 and 2a and 500 ms in Ex...