Tooth development results from a complicated multistep interaction between the oral epithelium and the underlying mesenchymal tissue. Abnormal tissue interactions during tooth development may potentially result in ectopic tooth development and eruption. We report a case of unerupted second molar and impacted third molar and an attempt is made to review possible causes of noneruption of teeth an...

Congenitally missing teeth are the most commonly seen dental anomalies. Agenesis of the permanent first molar has the least frequency of all the tooth types, and it usually occurs in association with oligodontia or anodontia. Thus, agenesis of the bilateral maxillary first permanent molar is an extremely rare occurrence, and no such case has been reported in ethnic Saudi Arabian population. We ...

J Korean Assoc Oral Maxillofac Surg 2012;38:110-5) Ankylosed tooth is defined as ‘the discontinuance of normal passive tooth eruption without any mechanical barrier’. Ankylosed tooth treatment is a challenge to dental clinicians. In treatment of maxillary molar ankylosis cases there are risks of oro-antral fistula, displacement of root fragments into the maxillary sinus, as well as the necessit...

We report prenatal and neonatal neuroimaging findings in a case of oral-facial-digital syndrome type VI (OFDS VI). Prenatal MR imaging at 29 weeks' gestation showed hypoplastic cerebellar vermis and hemispheres, the molar tooth sign, and a hypothalamic hamartoma. Neonatal MR imaging confirmed these findings. The neonate developed breathing abnormalities and exhibited frontal bossing, multiple b...

A comparative study has been made of human and great ape molar tooth enamel. Nanoindentation techniques are used to map profiles of elastic modulus and hardness across sections from the enamel-dentin junction to the outer tooth surface. The measured data profiles overlap between species, suggesting a degree of commonality in material properties. Using established deformation and fracture relati...

the vast majority of mandibular second molars have two roots with three root canals; however, variations in molar root canal anatomy are not uncommon. to the best of our knowledge, four rooted mandibular second molar with three mesial roots and one distal root has never been reported. herein, we present the endodontic management of a four rooted mandibular second molar tooth, diagnosed with the...

introduction: there are various studies looking at the effects of formocresol (fc) and mineral trioxide aggregate (mta) on pulpotomy of primary molars. this is a systematic review of literature comparing the success rates of mta and fc in pulpotomy of primary molars. materials and methods: the study list was obtained using pubmed, embase, scopus, science citation index, iran medex, google schol...

Benign cementoblastoma is a rare lesion representing less than 1% of all odontogenic tumours. It usually affects young people and is located in the posterior jaw. In almost all cases the tumour tends to be associated with an erupted permanent tooth, most often the first molar: only rarely has an association with an impacted or deciduous tooth been reported. The authors present a case of a cemen...

PURPOSE Autogenous tooth transplantation has been used as a predictable surgical approach to correct malocclusion and replace edentulous areas. This article focuses on the surgical approach and technique for molar transplantation. PATIENTS AND METHODS Thirty-two patients aged between 11 and 25 years underwent 44 autogenous molar transplantations. The procedure involved transplantation of impa...

In biology, morphology refers to structure and form. For teeth, morphology means different things to dentists and dental anthropologists. Carlsen (1987) wrote a book called Dental Morphology that focused on the structure of the four types of teeth in the upper and lower jaws. Each tooth was broken down into its constituent parts, such as lobes, lobe segments, essential and accessory ridges, cus...