OBJECTIVES:The correlations between the incisal guidance angle (IGA) and occlusal plane angles and temporomandibular joint (TMJ) morphology were investigated in adults with skeletal Class II division II malocclusion. MATERIALS AND METHODS:CBCT images of 37 patients were analyzed. It included 19 cases of skeletal Class II division II malocclusion with low angle (study group) and 18 cases of skeletal Class I average angle (control group). The Invivo Dental 5 software was employed to acquire the data of the incisal guidance angle (IGA), occlusal plane angle (FH-OP), anterior occlusal plane angle (FH-AOP) and the TMJ measurement items. RESULTS:The results of IGA, FH-AOP angle and FH-OP angle showed the study group > the control group (P < 0.05). There were statistically difference in the condylar mediolateral diameters, articular eminence inclination and height, and posterior joint spaces between two groups. No differences were revealed in the condylar anteroposterior diameters, the condylar inclination angle, condylar head width and height, condylar length, glenoid fossa depth and width between two groups. In the study group, IGA showed a moderate correlation with FH-AOP, a weak correlation with FH-OP and condylar mediolateral diameters. Meanwhile, there was a correlation between FH-AOP, FH-OP, and TMJ indicators. CONCLUSIONS:The IGA was not only related to FH-AOP and FH-OP, but also to the condylar mediolateral diameters. In addition, there was a correlation between the occlusal plane angles and TMJ morphology in skeletal Class II division II low angle malocclusion. CLINICAL RELEVANCE:For patients with skeletal Class II division II low angle malocclusion, adjusting the IGA and the occlusal plane angles could improve the esthetic appearance of the anterior teeth, occlusal function, and TMJ morphology.
目的:探讨对上颌后牙种植区骨量不足病例,尤其是骨高度不足需骨增量种植患者围手术期专科精细化护理要点,提高手术质量,减少术后并发症.方法:选择2018年1月～2021年12月就诊于青海红十字医院口腔修复科因上颌后牙缺失且需要行上颌窦外提升术同期牙种植术患者60例.根据护理方案不同随机将其分为研究组与对照组,对照组采用传统常规护理,研究组采用医护一体化模式下的口腔专科精细化护理.比较两组患者的术后不良反应情况、护理满意度和DAS评分并进行对比分析.结果:两组间治疗后研究组DAS评分、不良反应发生率均低于对照组(P＜0.05),而护理满意度高于对照组(x2=4.043,P＜0.05).结论:上颌窦外提升同期牙种植体植入术围手术期患者,进行口腔医护一体化模式下的口腔种植流程管理与专科精细化护理,可以减少手术不良反应发生率,提高患者护理满意度,降低紧张焦虑情绪.
种植修复是牙列缺损的常用修复方式之一.随着口腔种植技术的发展与成熟,种植修复后种植冠与相邻天然牙间邻接关系不良的现象越来越普遍,其中咬合因素被认为是影响种植修复后邻接关系的关键因素之一.本文通过查阅咬合与种植修复以及种植修复后邻接触关系相关的科学文献,介绍关于咬合负荷及其对种植修复后邻接关系潜在影响的叙述性评论,以及一些对种植义齿咬合设计的临床建议,以期最大限度地减少种植修复体上不利的咬合力,为临床上减少修复后邻接丧失的发生提供新思路.
今年的9月20日是第35个"全国爱牙日".今年爱牙日的主题是"口腔健康全身健康",副主题是"关爱老年口腔乐享健康生活".老年人的口腔健康应该受到更多重视,要彻底改掉"老掉牙"的传统观念,老年人口腔卫生保健的目标是"不缺牙".老年人是一个特殊的群体,往往由于年龄、生理、心理因素及传统习惯,容易忽视口腔的卫生保健.针对老年人如何做好口腔清洁等口腔卫生保健措施,有以下几点建议: (1)选择适合的保健牙刷,必要时选择含氟牙膏,增加牙根表面的抗酸能力,减少龋病的发生.
全锆冠桥修复体,即单层氧化锆冠桥修复体,因其机械性能优异,不含饰面瓷结构不易发生崩瓷,对对颌牙磨耗相对较小,采用数字化制作边缘适合性好等优点,受到越来越多临床医生的关注和使用.传统氧化锆强度和韧性高,但半透性不理想,制作的全锆修复体美学效果略差,多用于后牙区.近年来新开发的高透氧化锆、超透氧化锆等材料,美学性能得到显著提高,可用于前牙美学区修复,拓宽了全锆冠桥修复体的临床应用范围.本文对全锆修复体的优缺点、修复后的存留率及其常见并发症进行综述,以期为正确把握全锆冠桥修复体的适应证,延长其使用寿命、减少修复并发症提供临床指导.经过文献检索,目前全锆冠桥临床研究多集中于传统氧化锆,随访时间多为1～5年,临床存留率76.9％～100％.牙支持式全锆冠桥修复体的常见并发症包括修复体折裂/破损、脱落和牙髓并发症;种植体支持式全锆冠桥修复体的常见并发症包括近中邻接丧失、修复体脱落和折裂.可以通过在牙体预备、修复体设计、粘接前处理、抛光等环节中注意相关细节,修复后避免啃咬硬物,并佩戴垫等方式减少并发症的发生.今后还需进一步观察全锆冠桥五年以上的长期临床应用效果,并对高透氧化锆、超透氧化锆进行评估.
