dental follicle derived cells showed enhanced osteoblastspecific genes and ectopic bone formation after in vivo transplantation, indicating dental follicle is the powerful stem cell source in bone tissue regeneration. Dental pulp is expected to harbor the pools of undifferentiated precursor cells for nerve or vascular tissue regeneration. The most powerful advantage of dental tissues as stem ce...

The regeneration of the pulp-dentin complex has been a great challenge to both scientists and clinicians. Previous work has shown that the presence of prior infection may influence the characteristics of tissues formed in the root canal space after regenerative endodontic treatment. The formation of ectopic tissues such as periodontal ligament, bone, and cementum has been observed in the root c...

BACKGROUND Ectopic tissue has been observed frequently in human root canal specimens when cell homing studies were performed at the dorsum of rodents. In contrast, pulp-like tissue formed when immature teeth were implanted on top of the rat calvaria. It was surmised, yet not tested, that the implantation site might affect tissue ingrowth. METHODS Four root sections from human immature molars ...

SUMMARY The response of embryonic mouse dental epithelium and mesoderm to tissues of ectopic origin was examined. Isolated molar or incisor mesoderm was confronted with epithelium isolated from the plantar surface of the embryonic mouse foot plate or from the snout. Harmoniously structured teeth were formed from the foot epithelium and incisor or molar mesoderm. These data are interpreted as an...

In Japan, mass screening tests on newborns for Cretinism have been performed since 1984, Cretinism is a very rare condition. We report the clinical course and complications of longitudinal thyroid hormone replacement therapy (liothyronine sodium: T3) of two women with Cretinism and ectopic thyroid gland for the past 33 years until 2001. They were born in April 1951 (Case 1) and in January 1952 ...

Background & aim: Cervical ectopic pregnancy is a rare variant of ectopic pregnancy, and placenta percreta is a complex and dangerous condition; patients with these conditions are difficult to manage. In this study, we present a rare case of placenta percreta in cervical pregnancy. Case report: A 32 -year-old woman with 19 weeks of gestation and gross hematuria was admitted to Qaem Hospital in ...

INTRODUCTION Rhinolith, as the name indicates, is lithiasis or stone formation in the nose. The first well documented case of rhinolithiasis was reported by Barthdinin in 1654 [1]. Rhinoliths are completely or partially encrusted mineralized nasal masseseither exogenous or endogenous, depending on the origin of the nucleus on which the encrustation occurs. Dessicated blood clots, ectopic teeth ...

Presented here is an unusual case of teeth with aberrant enamel. One small and 3 large enamel pearls were identified in 2 maxillary third molars of a patient. One long enamel projection was connected to one of the large enamel pearls, along with 2 short cervical enamel projections. The ectopic enamel was associated with advanced localized periodontal destruction. After extraction, the molars we...

The extraction of a lower incisor constitutes a therapeutic alternative limited to certain occlusal situations, i.e. supernumerary incisors, tooth size anomalies (peg-shaped upper laterals), ectopic eruption and anterior crossbites. The effect of the extraction of a single incisor on the out of retention alignment of lower anterior teeth was studied in 26 treated cases. Initial (T1), final (T2)...

ALTHOUGH it is well established that alkaline phosphatase is present . Z J L in high concentrations in mammalian bones, the histological and cytological distribution of the enzyme in normal adult bones has not been adequately studied. Since the introduction of techniques for the histochemical localization of phosphatase (Gomori, 1939; Takamatsu, 1939) a number of papers have been published on t...