Vadavadagi Suneel V, Dhananjaya Kiran M, Yadahalli Rashmi P, Lahari M, Shetty Shilpa R, Bhavana B L
Department of Prosthodontics, S.J.M Dental College and Hospital, Chitradurga, Karnataka, India, e-mail:
Department of Conservative Dentistry and Endodontics, S.J.M Dental College and Hospital, Chitradurga, Karnataka, India.
J Contemp Dent Pract. 2017 Mar 1;18(3):205-208.
Endodontic restoration becomes a challenging task for the clinician because of severe loss of coronal tooth structure owing to trauma, caries, restorative, and endodontic procedures. The restoration of these teeth requires the use of a post and core as individual units or as abutment supports for fixed or removable restorations in a predictable long-term manner.
To compare and assess the compressive bond strength of glass, quartz, and carbon fiber posts restored with porcelain-fused-to-metal (PFM) crown.
A total of 45 upper central incisor teeth having straight root canals, similar anatomically root segments, and fully developed apices were selected. Teeth were divided into three groups of 15 teeth after endodontic treatment. Group I: Teeth inserted with the prefabricated glass fiber post. Group II: Teeth inserted with the quartz fiber post. Group III: Teeth inserted with carbon fiber post. The posts were placed and core was fabricated using composite restoration followed by PFM crown cementation using adhesive resin. Compressive load required to fracture the tooth was measured using a universal loading machine. The difference between the variables was assessed by one-way analysis of variance, followed by Tukey's post hoc test.
The compressive strength exhibited by carbon fiber posts was highest with a mean of 668.33 ± 26.397, followed by quartz fiber post (635.80 ± 30.390). Least compressive strength was exhibited by glass fiber post (567.53 ± 26.632). An analysis of variance shows statistically highly significant difference (p < 0.005) among the posts used.
This study concluded that the carbon fiber posts had higher compressive strength than other quartz, glass fiber posts.
Endodontic treatment results in loss of a significant part of the tooth structure. Posts restore these teeth and provide retention.
由于外伤、龋齿、修复和牙髓治疗等导致牙冠结构严重丧失，牙髓修复对临床医生来说是一项具有挑战性的任务。修复这些牙齿需要使用桩核作为单个单元或作为固定或可摘修复体的基牙支持，以实现可预测的长期效果。
比较和评估用烤瓷熔附金属（PFM）冠修复的玻璃、石英和碳纤维桩的抗压粘结强度。
共选择45颗上颌中切牙，其根管笔直，牙根段解剖结构相似，根尖完全发育。牙髓治疗后，将牙齿分为三组，每组15颗。第一组：插入预制玻璃纤维桩的牙齿。第二组：插入石英纤维桩的牙齿。第三组：插入碳纤维桩的牙齿。放置桩后，使用复合树脂修复制作核，然后使用粘结树脂进行PFM冠粘结。使用万能加载机测量使牙齿断裂所需的压缩载荷。通过单因素方差分析评估变量之间的差异，随后进行Tukey事后检验。
碳纤维桩表现出的抗压强度最高，平均值为668.33±26.397，其次是石英纤维桩（635.80±30.390）。玻璃纤维桩表现出的抗压强度最低（567.53±26.632）。方差分析显示，所使用的桩之间在统计学上有极显著差异（p<0.005）。
本研究得出结论，碳纤维桩比其他石英、玻璃纤维桩具有更高的抗压强度。
牙髓治疗会导致牙齿结构的大部分丧失。桩可修复这些牙齿并提供固位。
