CAD/CAM全瓷修復物邊緣密合度之探討

Purpose: The purpose of the present study was to investigate and compare the marginal and internal fits of the implant-supported ceramic crowns with indirect and direct digital capture devices. Methods: In the present study, an implant-supported crown on the maxillary right first premolar was constructed. As reference a group of IPS Empress II was controlled (named as Group Control), the margin fit and internal fit of 4 test groups were conducted: (1) Indirect digital scanner + IPS Empress CAD (named as Group ID-EM), (2) Intra-oral scanning devices + IPS Empress CAD (named as Group IO-EM), (3) Indirect digital scanner + VITABLOCSR Mark II (named as Group ID-VK), and (4) Intra-oral scanning devices + VITABLOCSR Mark II (named as Group ID-VK) Results: crowns made by CAM/CAM production showed significantly better marginal accuracy than those by means of Conventional techniques. It was found that the internal gap width of intra-oral and extra-oral impression systems did not differ significantly from each other.

並列關鍵字

Computer-aided design ； Computer-aided manufacturing ； all-ceramic

參考文獻

1. Bindl, A. and W.H. MORmann, Marginal and internal fit of all-ceramic CAD/CAM crown-copings on chamfer preparations. Journal of Oral Rehabilitation, 2005. 32(6): p. 441-447.

2. Aboushelib, M.N., et al., Microtensile bond strength of different components of core veneered all-ceramic restorations. Dent Mater, 2005. 21(10): p. 984-91.

3. Vernekar, N.V., et al., Alternate metal framework designs for the metal ceramic prosthesis to enhance the esthetics. J Adv Prosthodont, 2011. 3(3): p. 113-8.

4. Souza, R.O.A., et al., Marginal and Internal Discrepancies Related to Margin Design of Ceramic Crowns Fabricated by a CAD/CAM System. Journal of Prosthodontics, 2012. 21(2): p. 94-100.

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CAD/CAM全瓷修復物邊緣密合度之探討

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