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数字化无托槽隐形矫正治疗Ⅲ类错颌的设计方法

2018-12-07邓斌

中外医疗 2018年22期

邓斌

[摘要] 目的 评价无托槽隐形矫正治疗Ⅲ类错颌疗效、起效特点,为数字化设计提供依据。 方法2017年2—9月,医院共采用无托槽隐形矫治器矫正治疗Ⅲ类错颌8例,测量184颗牙,对比设计目标以及实际矫治指标。 结果 颊向、舌向、近中、远中、伸长、压低方向上的移动效能分别为(67.4±25.6)%、(68.4±21.7)%、(62.9±30.4)%、(77.2±41.1)%、(60.4±29.1)%、(56.1±27.5)%,差异有统计学意义(P<0.05)。倾斜矫治效果与近远、近中的矫治效果存在显著相关性,差异有统计学意义(r=0.641、0.681,P<0.05)。 结论 无托槽隐形矫正治疗Ⅲ类错颌疗效尚可,对于近遠中移动需求较高的对象,需要重点提升倾斜方向移动控制。坚持个体化的设计原则,重视倾斜方向移动力矩控制,以增强整体移动能力,最终提高矫治效果。

[关键词] 无托槽隐形矫正;Ⅲ类错颌;数字化设计

[中图分类号] R783.5 [文献标识码] A [文章编号] 1674-0742(2018)08(a)-0091-03

Digitized Bracketless Stereotherapy for Class III Wrong Mandibular Design

DENG Bin

Department of Stomatology, Lincang People's Hospital, Lincang, Yunnan Province, 677000 China

[Abstract] Objective To evaluate the efficacy and onset characteristics of type III malocclusion without brackets invisible correction, and provide evidence for digital design. Methods From February to September of 2017, the hospital used a non-bracket invisible appliance to correct 8 cases of type III malocclusion and measure 184 teeth, comparing the design goals and the actual correction index. Results The movement efficiencies in the buccal, lingual, mesial, distal, elongate and depressive directions were (67.4±25.6)%, (68.4±21.7)%, (62.9±30.4)%, (77.2±41.1)%, (60.4±29.1)%, (56.1±27.5)% respectively. The difference was statistically significant (P<0.05). There was a significant correlation between the effect of oblique correction and the correction effect of near-distant and near-mediation, and the difference was statistically significant (r=0.641, 0.681, P<0.05). Conclusion The treatment effect of Class III malocclusion with no bracket invisible correction is acceptable. For the subjects with high mobile demand in near and far, it is necessary to focus on improving the control of tilt direction. Adhere to the individual design principles, pay attention to the tilt direction movement torque control to enhance the overall mobility, and ultimately improve the effect of correction.

[Key words] No bracket stealth correction; Class III malocclusion; Digital design

无托槽隐形矫治器越来越受到患者及其医师的关注,其能够实现对牙齿的精准三维移动,使矫治过程可视化,具有美观性、舒适性、方便性、隐蔽性、矫治可视等优点,逐渐成为成人患者进行正畸治疗的首选方法[1]。Ⅲ类错颌是一种严重的口腔畸形,数字化无托槽隐形矫治器治疗是主流治疗方法,但有报道显示其矫治效率存在明显的个体差异,如何提高矫治器治疗效果值得深入研究[2]。该文以2017年2—9月,医院共采用8例无托槽隐形矫治器矫正治疗Ⅲ类错颌作为研究对象,分析矫治效能,总结设计经验,现报道如下。

1 资料与方法

1.1 一般资料

医院共采用无托槽隐形矫治器矫正治疗Ⅲ类错颌8例,其中男5例、女3例,中位年龄24岁。纳入标准:①口腔内无缺失牙、重度磨损牙;②以三类错颌入组;③知情同意,有矫治治疗的需求;④口腔卫生习惯尚可。排除标准:①合并其他严重疾病,如慢性心力衰竭、2型糖尿病;②合并磨牙症。病例经伦理委员会的批准,患者及其家属知情同意。

1.2 方法

1.2.1 治疗 所有对象,都明确适应症,与患者沟通选择数字化无托槽隐形矫正治疗,使用GC生产的硅胶印模材料,制得到口内的精准模型。……

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