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The theory of non-carious cervical lesions (NCCLs) suggests that tooth flexure arising from cyclic, eccentric occlusal forces causes their formation and progression in vulnerable cervical regions of teeth. The etiology is still controversial. Attrition, corrosion, abrasion and stress-corrosion might act alone or in combination to initiate and perpetuate lesions. This review of the literature provides the basis for the diagnosis that can be used in consideration of treatment options. [ABSTRACT FROM AUTHOR]

When the goal of restorative treatment is to maintain the patient's pre-existing intercuspation and occlusal vertical dimension (OVD) following tooth preparation for crowns or fixed partial dentures (FPDs), casts must be mounted on an articulator in the same pretreatment tooth-to-tooth relationship. A simple technique is described that uses acrylic transfer copings over prepared teeth to record and preserve this relationship so that working and opposing casts can be mounted accurately. The technique may be used to recapture the lost third leg of the tripod after teeth have been prepared. To further reduce errors when mounting casts onto an articulator, a method is recommended that uses rigid connectors to join and stabilize casts in a manner that minimizes potential movement during placement and setting expansion of gypsum mounting materials. [ABSTRACT FROM AUTHOR]

The article presents information on narticulator, a navigational articulator, designed by Jing-Jing Fang, Professor at National Cheng Kung University (NCKU), southern Taiwan. It mentions that narticulator is used for orthognathic planning and provides information to the surgeon on the uncertainty that may occur during high risk surgeries.

In this article, the author discusses the principles of occlusion. He explains anterior guidance as a principle related to speech and the protection of teeth and restorations, and he talks about the relationship of aesthetics with occlusion. Other principles mentioned by the author are bilateral posterior occlusal contact, flat occlusal plane, and intra-arch stability. The principles discussed according to the author are more important in patients with heavily restored dentitions and those which showed a predisposition to break cusps.