성견에서 수직적 골결손부에 골이식후 교정력 적용시기에 따른 치주조직의 반응
Periodontal Response According to the Timing of Orthodontic Force Applicatin after Bone Graft into Angular Bony Defect in the Dog
이상열, 이기헌,
소속 상세정보
이상열 ( ) - 전남대학교 치과대학 치과교정학교실
이기헌 ( ) - 전남대학교 치의학연구소
KMID : 0361920010310030369
Abstract
In orthodontic patients, frequently, amalgam restorations are present on the buccal surface of molars. The ability to successfully bond orthodontic brackets and buccal tubes to amalgam restorations would therefore be of clinical value. But the bond strength to total amalgam surface is probably not critical in most instances. Because there is usually a considerable amount of sound enamel surrounding a buccal amalgam filling.
The purpose of this study was to evaluate the bond strengths of orthodontic brackets according to surface treatments and size of amalgam restorations.
Eighty tooth specimen were assigned to four groups according to amalgam size-1.5mm, 2.Omm, 2.5mm, 3.0mm diameter-and then divided into two groups : one half was sandblasting group the other half was no sandblasting group. After Bracket bonding, shear bond strength for each specimen was determined and bond failure patterns was evaluated.
1. Shear bond strength of amalgam size 1.5mm group was significantly higher than that of the other groups. (p<0.05) 2. There was no significant difference in the bond strength produced by sandblasting. (p<0.05)
3. Shear bond strength of G and H group of which amalgam restoration ratio to the bracket base sizes were 61% were significantly decreased 50-60% level of that of control group. (p<0.05) 4. There was positive correlation between sandblasting and mARL (p<0.05)
The results of the present study indicate that it may be feasible to bond orthodontic bracket clinically successfully to amalgam restoration with conventional orthodontic resin when its size is less than 50% of that of bracket ease.
키워드
수직적 골결손;골이식;교정력 적용시기;치주반음;Angular bony defect;Bone graft;Timing;Periodontal response
원문 및 링크아웃 정보
등재저널 정보