A soft tissue drape that is formed around the tooth, as it emerges from bone, has both aesthetic and functional significance. Post-extraction hard changes are inevitable leads to a buccal concavity. The pontics for tooth or implant supported fixed partial denture in such cases appear longer. Preservation of part root preserves periodontal apparatus hence facilitates optimal region pontic site d...

One of the aims of developmental biology is to understand how a single egg cell gives rise to the complex spatial distributions of cell types and extracellular components of the adult phenotype. This review discusses the main genetic and epigenetic interactions known to play a role in tooth development and how they can be integrated into coherent models. Along the same lines, several hypotheses...

As stated in the last paper (1965), many authors have reported about the initial development of permanent tooth germs but there are very few studies concerning the position changes during the whole development of permanent tooth germs. Therefore, following the last report about the ontogenetic origin of permanent tooth germs, the author wishes to describe in details the position changes during ...

Developmental anomalies affecting the teeth are often seen in the oral cavity. Abnormalities in the physiological processes of tooth development lead to these anomolies. Talon cusp or dens evaginatus of anterior tooth is one of the dental anomalies affecting the shape of a tooth, in which an accessory cusp like structure projects from the cingulam area or cementoenamel junction.

Sonic hedgehog (Shh) is an essential signaling peptide required for normal embryonic development. It represents a highly-conserved marker of odontogenesis amongst the toothed vertebrates. Signal transduction is involved in early specification of the tooth-forming epithelium in the oral cavity, and, ultimately, in defining tooth number within the established dentition. Shh also promotes the morp...

normal 0 false false false en-us x-none ar-sa microsoftinternetexplorer4 the maxillary lateral incisor is the second most common congenitally absent tooth. there are several treatment options for replacing the missing maxillary lateral incisor, including canine substitution, tooth-supported restoration, or single-tooth implant. dental implants are an appropriate treatment option for replacing m...