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[Preliminary evaluation of clinical effect of computer aided design and computer aided manufacture zirconia crown].
Zhonghua Kou Qiang Yi Xue Za Zhi. 2013 Jun; 48(6):355-8.ZK

Abstract

OBJECTIVE

To evaluate clinical effects of computer aided design and computer aided manufacturing (CAD/CAM) milled zirconia crown in three aspects: aesthetic, contact wear and fracture.

METHODS

Sixty patients were divided into two groups.In one group, 35 full contour CAD/CAM zirconia crown were made on molars of 30 patients. The manufacturing process of zirconia crown was as follow. First, the three dimensional(3-D) data of working models, antagonist impression and check records were acquired by 3-D laser scanning Dental wings S50. Then full contour zirconia crowns, which had functional occlusal contacts with antagonistic teeth, and appropriate contact with adjacent teeth were designed with Zeno-CAD(V4.2.5.5.12919) software. ZENOSTAR Zr pure zirconia material was milled in digital controlled machine WIELAND 4030 M1.In the end, the zirconia crown were completed with the method of second sintering and polishing. After clinical try-in, the crown was cemented.In the control group, thirty gold alloy full crown were made and cemented on molars of 30 patients. According to the modified U S Public Health Service Criteria(USPHS) evaluation standard, all crowns were evaluated on the same day, at three months, half a year, one year and two years following delivery. There were three aspects we were focusing on in the evaluation: aesthetic, contact wear(restoration and antagonist), and fracture.

RESULTS

In all the prosthesis we evaluated during the 24 months, no fracture was found. Contact wear of crowns varies according to different antagonist teeth.

CONCLUSIONS

The zirconia crowns show privilege in aesthesis, toughness and anti-wearing.However, there is contact wear on antagonistic natural teeth. Thus it is a good choice when full zirconia crowns are indicated on two antagonistic teeth in both jaws.

Links

Publisher Full Text

Authors+Show Affiliations

Wang YG
Center of Digital Dentistry, Peking University School and Hospital of Stomatology & National Engineering Laboratory for Digital and Material Technology of Stomatology & Research Center of Engineering and Technology for Digital Dentistry, Ministry of Health, Beijing 100081, China.
Xing YX
No affiliation info available
Sun YC
No affiliation info available
Zhao YJ
No affiliation info available
Lü PJ
No affiliation info available
Wang Y
No affiliation info available

MeSH

AdultComputer-Aided DesignCrownsDental PorcelainDental Prosthesis DesignDental Restoration WearFemaleHumansMaleMiddle AgedMolarYoung AdultZirconium

Pub Type(s)

English Abstract
Journal Article
Research Support, Non-U.S. Gov't

Language

chi

PubMed ID

24120005

Citation

Wang, Yu-guang, et al. "[Preliminary Evaluation of Clinical Effect of Computer Aided Design and Computer Aided Manufacture Zirconia Crown]." Zhonghua Kou Qiang Yi Xue Za Zhi = Zhonghua Kouqiang Yixue Zazhi = Chinese Journal of Stomatology, vol. 48, no. 6, 2013, pp. 355-8.
Wang YG, Xing YX, Sun YC, et al. [Preliminary evaluation of clinical effect of computer aided design and computer aided manufacture zirconia crown]. Zhonghua Kou Qiang Yi Xue Za Zhi. 2013;48(6):355-8.
Wang, Y. G., Xing, Y. X., Sun, Y. C., Zhao, Y. J., Lü, P. J., & Wang, Y. (2013). [Preliminary evaluation of clinical effect of computer aided design and computer aided manufacture zirconia crown]. Zhonghua Kou Qiang Yi Xue Za Zhi = Zhonghua Kouqiang Yixue Zazhi = Chinese Journal of Stomatology, 48(6), 355-8.
Wang YG, et al. [Preliminary Evaluation of Clinical Effect of Computer Aided Design and Computer Aided Manufacture Zirconia Crown]. Zhonghua Kou Qiang Yi Xue Za Zhi. 2013;48(6):355-8. PubMed PMID: 24120005.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Preliminary evaluation of clinical effect of computer aided design and computer aided manufacture zirconia crown]. AU - Wang,Yu-guang, AU - Xing,Yan-xi, AU - Sun,Yu-chun, AU - Zhao,Yi-jiao, AU - Lü,Pei-jun, AU - Wang,Yong, PY - 2013/10/15/entrez PY - 2013/10/15/pubmed PY - 2014/4/8/medline SP - 355 EP - 8 JF - Zhonghua kou qiang yi xue za zhi = Zhonghua kouqiang yixue zazhi = Chinese journal of stomatology JO - Zhonghua Kou Qiang Yi Xue Za Zhi VL - 48 IS - 6 N2 - OBJECTIVE: To evaluate clinical effects of computer aided design and computer aided manufacturing (CAD/CAM) milled zirconia crown in three aspects: aesthetic, contact wear and fracture. METHODS: Sixty patients were divided into two groups.In one group, 35 full contour CAD/CAM zirconia crown were made on molars of 30 patients. The manufacturing process of zirconia crown was as follow. First, the three dimensional(3-D) data of working models, antagonist impression and check records were acquired by 3-D laser scanning Dental wings S50. Then full contour zirconia crowns, which had functional occlusal contacts with antagonistic teeth, and appropriate contact with adjacent teeth were designed with Zeno-CAD(V4.2.5.5.12919) software. ZENOSTAR Zr pure zirconia material was milled in digital controlled machine WIELAND 4030 M1.In the end, the zirconia crown were completed with the method of second sintering and polishing. After clinical try-in, the crown was cemented.In the control group, thirty gold alloy full crown were made and cemented on molars of 30 patients. According to the modified U S Public Health Service Criteria(USPHS) evaluation standard, all crowns were evaluated on the same day, at three months, half a year, one year and two years following delivery. There were three aspects we were focusing on in the evaluation: aesthetic, contact wear(restoration and antagonist), and fracture. RESULTS: In all the prosthesis we evaluated during the 24 months, no fracture was found. Contact wear of crowns varies according to different antagonist teeth. CONCLUSIONS: The zirconia crowns show privilege in aesthesis, toughness and anti-wearing.However, there is contact wear on antagonistic natural teeth. Thus it is a good choice when full zirconia crowns are indicated on two antagonistic teeth in both jaws. SN - 1002-0098 UR - https://www.unboundmedicine.com/medline/citation/24120005/[Preliminary_evaluation_of_clinical_effect_of_computer_aided_design_and_computer_aided_manufacture_zirconia_crown]_ L2 - http://journal.yiigle.com/LinkIn.do?linkin_type=pubmed&issn=1002-0098&year=2013&vol=48&issue=6&fpage=355 DB - PRIME DP - Unbound Medicine ER -