Department of Advanced Prosthodontics, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan.
Department of Fixed Prosthodontics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan.
Sci Rep. 2022 Nov 9;12(1):19070. doi: 10.1038/s41598-022-23458-5.
We conducted a six-month clinical follow-up on computer-aided design/computer-aided manufacturing-fabricated molar polyetheretherketone PEEK crowns to investigate their therapeutic effect. Only the PEEK crowns were examined as our study focused on short-term clinical evaluation of the new PEEK material. Twenty-three cases of PEEK crowns placed on the molars of 20 subjects (7 males and 13 females, mean age: 60.6 ± 14.2 years) were included in the study. The evaluation items were the condition of the crowns at the time of cementation and after six months, patient satisfaction, masticatory ability, and occlusal force. Mann-Whitney U tests with a significance level of 5% were used to examine the difference in glucose concentration by masticatory ability, occlusal pressure, and occlusal force, with and without PEEK crowns. The occlusion, margin fit, and contact of all 23 cases at the time of cementing were good. Six months after cementation, there was no crown desorption, fracture or crack, and prosthodontics was not needed in the 22 cases (one patient dropped out). No wear of the dental antagonist was observed. Patient satisfaction was generally high. There was no significant difference in masticatory ability between the groups with and without PEEK crowns. The subject's occlusal force was within the normal range. PEEK crowns used on molars can replace metal crowns and hold promise for an appropriate and effective treatment.
我们对计算机辅助设计/计算机辅助制造制作的磨牙聚醚醚酮 PEEK 牙冠进行了为期六个月的临床随访，以研究其治疗效果。我们的研究仅关注新 PEEK 材料的短期临床评估，因此只检查了 PEEK 牙冠。本研究纳入了 20 名受试者（7 名男性，13 名女性；平均年龄：60.6±14.2 岁）的 23 例 PEEK 牙冠。评估项目包括牙冠黏固时和黏固后 6 个月的情况、患者满意度、咀嚼能力和咬合力。使用具有 5%显著性水平的 Mann-Whitney U 检验，比较有无 PEEK 牙冠时咀嚼能力、咬合压力和咬合力的葡萄糖浓度差异。黏固时所有 23 例的咬合、边缘适合度和接触均良好。黏固后 6 个月，无 1 例牙冠脱位、断裂或裂纹，无需修复体（1 例患者脱落）。未观察到对颌牙的磨损。患者满意度普遍较高。有无 PEEK 牙冠组的咀嚼能力无显著差异。患者的咬合力在正常范围内。PEEK 牙冠可用于磨牙替代金属牙冠，有望成为一种合适且有效的治疗方法。
