Post-aging comparative study of snowplow and conventional techniques for the resin restoration of defective primary teeth.
10.7518/hxkq.2025.2025096
- Author:
Manman HAN
1
;
Jing LÜ
1
;
Jian GUAN
1
;
Manze WANG
1
;
Xuechao LÜ
1
;
Xing'ai JIN
1
Author Information
1. Dept. of Pediatric Dentistry, School of Stomatology, The First Affiliated Hospital of Harbin Medical University, Harbin 150000, China.
- Publication Type:English Abstract
- Keywords:
cavity lining;
layered filling;
marginal integrity;
nano-microleakage;
primary teeth;
shear bond strength;
snowplow technique
- MeSH:
Tooth, Deciduous;
Humans;
Dental Restoration, Permanent/methods*;
Dental Leakage;
Shear Strength;
Dental Bonding/methods*;
Molar;
Composite Resins;
Silver
- From:
West China Journal of Stomatology
2025;43(4):505-512
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVES: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).
CONCLUSIONS:Applying the snowplow technique to restore defective primary teeth can improve the bond strength and margin integrity and reduce nano-microleakage.
