4'METAfMMA'TBB resin has shown good bieeompatibility and remarkable adhesion to dentin. It seems to be suitable for use {n periodontal tissues for retrograde root sealing and treatment of vertically fractured roots. For an adhesive resin to be useful clinically, it must bond not only to the dentin but also to the cementum. The purpose of this study was to evaluate the long-term adhesion durabil...

Current literature supports the use of powered instrumentation over traditional hand instrumentation. The objective of scaling and root planing is the complete removal of plaque and calculus from root surfaces. While this is unrealistic, the accepted end-point is a smooth, glassy root surface during periodontal instrumentation. This often has resulted in overinstrumentation and excessive remova...

The spatial distribution of alkaline phosphatase (ALP) activity was examined in the periodontal ligament of the continuously growing rat incisor. With the indoxyl-tet-razolium salt method, enzyme activity was demonstrated in undecalcified cryosections, and the amount of reaction product was quantified. ALP activity appeared to be distributed heterogeneously. Its highest activity was found in th...

Histologic examination revealed sheets and masses of paucicellular cementum attached to the root of the tooth (Fig. 2). The cementum displayed prominent basophilic reversal lines and cementoblastic rimming (Figs. 3 and 4). The cementoblasts were plump with moderate amounts of cytoplasm, hyperchromatic nuclei, and conspicuous nucleoli. The intervening stroma consisted of loose fibrovascular tiss...

Dentin is a calcified tissue of the body, and along with enamel, cementum, and pulp is one of the four major components of teeth. Usually, it is covered by enamel on the crown and cementum on the root and surrounds the entire pulp. By weight, 70% of dentin consists of the mineral hydroxylapatite, 20% is organic material and 10% is water [3]. Secondary dentin may be defined as the dentin formed ...

Wnt/β-catenin signaling plays a critical role in bone formation and regeneration. Dentin and cementum share many similarities with bone in their biochemical compositions and biomechanical properties. Whether Wnt/β-catenin signaling is involved in the dento-alveolar complex formation is unknown. To understand the roles of Wnt/β-catenin signaling in the dento-alveolar complex formation, we genera...