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PubMed1995

[Bonding strength and fracture resistance of artificial teeth in dental prostheses].

Debonding of plastic teeth from its denture base has been frequently experienced in our prosthetic practice. Three of nine products investigated have fulfilled the requirements for bonding according to ISO test 3336. Loading forces necessary to produce fractures varied between 170-810 N within the tooth and 80-230 N at the tooth-denture base interface. Comparative significances were noted for the mean breaking force against fracture and debonding when comparing the resistance of "Acry Rock" to the other eight materials tested. Maximizing the extension of the polymerization surface through a larger surface area of individual teeth seemed to be a significant factor in the determination of the debonding force necessary to produce fracturing.

Dental Bonding↗
PubMed1988

A criterion for the selection of artificial posterior teeth.

Mandibular movement and masticatory performance were evaluated in the edentulous patients with an experimental denture using posterior artificial teeth of different occlusal schemes in order to determine the criterion for the selection of posterior artificial teeth. Lower masticatory performance was observed with non-anatomic posterior teeth than with semi-anatomic or anatomic ones regardless of the condition of residual ridge and inclination of the horizontal condylar guidance. The value of the lateral component of the masticatory cycle was closely related to the inclination of the cusp and the value of masticatory performance. This suggested strongly that the component could be a criteria for the selection of the type of the artificial posterior teeth.

Aged↗