扫雪机技术和传统技术应用于缺损乳牙树脂修复老化后的比较研究

doi:10.7518/hxkq.2025.2025096

摘要/Abstract

摘要：

目的评估扫雪机技术应用于缺损乳牙树脂粘接修复与分层充填技术、衬洞技术在老化后的剪切粘接强度、边缘完整性和纳米微渗漏等方面的差异。方法收集新鲜拔除、牙冠完整的乳前牙51颗、乳磨牙30颗。实验分为分层充填组、衬洞组、扫雪机组，分别进行剪切粘接强度实验、边缘完整性实验和纳米微渗漏实验，比较不同组别之间在老化后的粘接强度、边缘完整性和银离子纳米微渗漏方面的差异。结果分层充填组、衬洞组、扫雪机组剪切粘接强度的中位数分别为2.45、5.72、9.43 MPa，衬洞组和扫雪机组明显大于分层充填组（P<0.05），衬洞组和扫雪机组之间差异无统计学意义（P>0.05）。分层充填组、衬洞组、扫雪机组整体边缘完整率的中位数分别为55.38%、48.25%、65.63%，3组间差异无统计学意义（P>0.05）。分层充填组、衬洞组、扫雪机组纳米微渗漏的中位数分别为11.71%、9.47%、11.55%，3组间差异无统计学意义（P>0.05）。结论扫雪机技术应用于乳牙缺损修复时可提高剪切粘接强度，改善边缘完整性，降低纳米微渗漏。

关键词: 乳牙, 扫雪机技术, 窝洞衬洞, 分层充填, 剪切粘接强度, 边缘完整性, 纳米微渗漏

Abstract:

Objective This study aims to evaluate the differences in shear bond strength, marginal adaptation, and nano-microleakage after aging among snowplow, layered filling, and lining techniques applied to the resin-bonded restoration of defective primary teeth. Methods In this study, 51 freshly extracted, crown-intact primary anterior teeth and 30 primary molars were collected. The experimental groups were as follows: layered filling group, lining group, and snowplow group. Experiments were performed to compare the differences in shear bond strength, marginal integrity, and silver ion nano-microleakage after aging among these groups. Results The median shear bond strength of the layered filling group, lining group, and snowplow group were 2.45, 5.72, and 9.43 MPa, respectively. The values for lining group and snowplow group were significantly higher than that for layered filling group (P<0.05). No statistically significant difference was found between lining group and snowplow group (P>0.05). The median overall margin integrity of the layered filling group, lining group, and snowplow group were 55.38%, 48.25%, and 65.63%, respectively. The difference among the three groups was not statistically significant (P>0.05). The median percentages of silver ion nano-microleakage in the layered filling group, lining group, and snowplow group were 11.71%, 9.47%, and 11.55%, respectively. The difference among the three groups was not statistically significant (P>0.05). Conclusion Applying the snowplow technique to restore defective primary teeth can improve the bond strength and margin integrity and reduce nano-microleakage.

Key words: primary teeth, snowplow technique, cavity lining, layered filling, shear bond strength, marginal integrity, nano-microleakage

中图分类号:

R781.05

韩曼曼, 吕晶, 关健, 王曼泽, 吕学超, 金星爱. 扫雪机技术和传统技术应用于缺损乳牙树脂修复老化后的比较研究[J]. 华西口腔医学杂志, 2025, 43(4): 505-512.

Han Manman, Lü Jing, Guan Jian, Wang Manze, Lü Xuechao, Jin Xing’ai. Post-aging comparative study of snowplow and conventional techniques for the resin restoration of defective primary teeth[J]. West China Journal of Stomatology, 2025, 43(4): 505-512.

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实验名称	实验步骤
剪切粘接强度实验	a，b₁，c₁，d₁，e，f，g
边缘完整性实验	a，b₂，c₂，d₂，d₁，e，f，g，h，i，j，k
纳米微渗漏实验	a，b₃，c₁，d₁，e，f，j，g，h，i，k

项目	分层充填组	衬洞组	扫雪机组	Z值	P值
整体边缘完整率	55.38（43.56，75.46）	48.25（20.97，84.68）	65.63（44.96，87.40）	1.81	0.40
龈壁边缘完整率	31.04（14.31，94.01）	36.86（00.00，86.72）	70.86（46.41，100.00）	5.03	0.08
侧壁边缘完整率	56.02（35.02，69.81）	48.08（30.86，92.10）	54.85（32.81，91.90）	0.21	0.90
Z值	-0.61	-0.80	-1.10
P值	0.58	0.44	0.28