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KMID : 0362420160540030253
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Journal of Korean Academy of Prosthodontics
2016 Volume.54 No. 3 p.253 ~ p.258
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Superimposition: a simple method to minimize occlusal adjustment of monolithic restoration
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Choi Chang-Hun
Kim Sun-Jai
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Abstract
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The development of translucent zirconia enabled clinicians to choose a monolithic zirconia crown as one treatment modality in the posterior dentition. Careful occlusal adjustments are recommended for monolithic zirconia crowns because grinding zirconia inevitably causes phase transformation, which may deteriorate mechanical properties. Intraoral scanners enable the clinician to scan and superimpose a complete tooth structure before preparation onto the prepared abutment. This technique helps to reproduce the original tooth form and occlusion of the patient. In this case report, prostheses were fabricated for patients with cracked or fractured tooth by applying intraoral scanner, Computer aided design-computer aided manufacturing (CAD-CAM) and monolithic zirconia crown to reproduce the occlusion of original tooth and to minimize occlusal adjustment. The clinical results were satisfactory in both esthetic and functional aspects.
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KEYWORD
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Computer aided design-computer aided manufacturing (CAD-CAM), Superimposition, Monolithic zirconia, Intraoral scanner
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