Publication: Clinical performance and wear characteristics of veneered lithia-disilicate-based ceramiccrowns.
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Issued Date
2008-05
Resource Type
Language
eng
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application/pdf
No. of Pages/File Size
1221501 bytes
ISSN
0109-5641 (printed)
1879-0097 (electronic)
1879-0097 (electronic)
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Mahidol University
Bibliographic Citation
Suputtamongkol K, Anusavice KJ, Suchatlampong C, Sithiamnuai P, Tulapornchai C. Clinical performance and wear characteristics of veneered lithia-disilicate-based ceramic crowns. Dent Mater. 2008 May;24(5):667-73.
Suggested Citation
Kallaya Suputtamongkola, Anusavice, Kenneth J., Chatcharee Suchatlamponga, Phira Sithiamnuaia, Chantana Tulapornchai, กัลยา ศุพุทธมงคล, ชัชรี สุชาติล้ำพงศ์, พีระ สิทธิอำนวย, ฉันทนา ตุลาพรชัย Clinical performance and wear characteristics of veneered lithia-disilicate-based ceramiccrowns.. Suputtamongkol K, Anusavice KJ, Suchatlampong C, Sithiamnuai P, Tulapornchai C. Clinical performance and wear characteristics of veneered lithia-disilicate-based ceramic crowns. Dent Mater. 2008 May;24(5):667-73.. doi:http://ac.els-cdn.com/S0109564107001819/1-s2.0-S0109564107001819-main.pdf?_tid=2206713c-31d5-11e5-a68e-00000aacb361&acdnat=1437722897_612e9700acd04a6369d6550f1329031f Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/933
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Title
Clinical performance and wear characteristics of veneered lithia-disilicate-based ceramiccrowns.
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Abstract
Objectives. The objectives of this study were to characterize the clinical performance and wear characteristics of lithia-disilicate-based ceramic crowns. Methods. Thirty posterior crowns were made using the heat-pressing technique and lithiadisilicate- based core ceramic. Subjects were recalled annually. The quality of crowns and adjacent gingival tissueswere examined using nine criteria for acceptability. All crownswere examined and ranked from 4 (Excellent) to 1 (Unacceptable) for each criterion. Impressions
were made for replica models at each appointment. Wear characteristics of dental ceramic and enamelwere obtained by comparing the surface of the original model with the follow-up model using a laser scanner.
Results. Twenty-nine subjects returned for the 1-year recall examination. The maximum clenching force for the 30 subjects ranged from 125 to 815N. All clinical criteria were ranked good to excellent at the 1-year recall exam and no fractures were observed. The mean occlusal wear volumes for the ceramic crowns after 1 year were 0.19 (0.065)mm3 for premolar sites and 0.34 (0.08)mm3 for molar sites. The mean occlusal wear volumes of opposing enamel after 1 year were 0.21 (0.06)mm3 for premolar teeth and 0.50 (0.22)mm3 for molar teeth. The mean occlusal wear volume of ceramic molar
crowns was significantly lower than the volume of enamel wear of the opposing teeth (p?0.05). Conclusions. The quality of the overall prostheses and the gingival tissues were acceptable after 1 year. The mean occlusal wear volume of ceramic molar crowns was significantly lower than the enamel wear volume of the opposing teeth.