The Effect of Temporary Cement Cleaning Methods on the Retention of Crowns
- 주제(키워드) Cleaning method , crown retention , temporary cement
- 주제(기타) Dentistry, Oral Surgery & Medicine
- 설명문(일반) [Song, Mi-Young] Ewha Womans Univ, Grad Sch Clin Dent, Dept Dent, Seoul, South Korea; [An, Hongseok] Marquette Univ, Sch Dent, Dept Gen Dent Sci, Milwaukee, WI 53233 USA; [Park, Eun-Jin] Ewha Womans Univ, Sch Med, Dept Dent, 1071 Anyangcheon Ro, Seoul 07985, South Korea
- 등재 SCIE, SCOPUS
- 발행기관 WILEY
- 발행년도 2019
- URI http://www.dcollection.net/handler/ewha/000000160090
- 본문언어 영어
- Published As http://dx.doi.org/10.1111/jopr.12646
- PubMed https://pubmed.ncbi.nlm.nih.gov/28598530
초록/요약
Purpose To evaluate the effect of temporary cement cleaning methods on the retention of cemented crowns using zinc phosphate cement and resin-modified glass ionomer cement. Materials and Methods Forty titanium specimens were fabricated to simulate prepared molars with minimally retentive taper. The Ni-Cr cast crowns were fabricated, temporarily cemented, and separated. The specimens were divided into four groups according to the temporary cement cleaning method (n = 10) as follows: control group (no temporary cementation), orange solvent group, ultrasonic cleaning group, and air-abrasion group. After the cleaning procedures, the specimens were cemented with definitive cements (zinc phosphate cement and resin-modified glass ionomer, RMGI, cement) and subjected to thermocycling (5000 cycles, 5-55 degrees C, dwell time, 10 seconds). The tensile bond strength of each specimen was measured using a universal testing machine, and the results were analyzed using the Kruskal-Wallis and Mann-Whitney U test (alpha = 0.05). Results When cemented with zinc phosphate cement, the statistical analysis showed that the value of the air-abrasion group was significantly higher than those of the other groups (p < 0.01). There was no statistically significant difference among the other groups. When cemented with RMGI cement, the air-abrasion group showed the lowest value, and the control group showed the highest value (p < 0.01). The difference between the ultrasonic cleaning group and the orange solvent group was not statistically significant. Conclusion The use of temporary cement did not have a significant influence on retention of permanently cemented crowns when zinc phosphate cement was used for permanent cementation. Airborne-particle abrasion after provisional cementation improved retention of crowns cemented with zinc phosphate cement; however, the use of temporary cement significantly decreased retention of permanently cemented crowns when RMGI cement was used regardless of the temporary cement cleaning method.
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