EFFECTS OF TOPICAL ADMINISTRATION OF A BISPHOSPHONATE (RISEDRONATE) ON ORTHODONTIC TOOTH MOVEMENTS IN RATS

被引:102
作者
ADACHI, H [1 ]
IGARASHI, K [1 ]
MITANI, H [1 ]
SHINODA, H [1 ]
机构
[1] TOHOKU UNIV,SCH DENT,DEPT ORTHODONT & PHARMACOL,SENDAI 98077,MIYAGI,JAPAN
关键词
BISPHOSPHONATE; BONE RESORPTION; ORTHODONTICS; RATS; TOOTH MOVEMENT;
D O I
10.1177/00220345940730081301
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
In orthodontics, undesirable movement of anchor teeth during tooth movement and relapse of moved teeth after treatment are the main causes of unsuccessful results. Ii these tooth movements could be prevented with pharmacological agents, a less complex orthodontic force system and less extensive retention would be required. The purpose of this study was to examine the effect of topical administration of a bisphosphonate (risedronate), a potent blocker of bone resorption, on orthodontic tooth movements in rats. In the first experiment, both the right and left upper first molars were moved buccally with a standardized expansion spring under administration of risedronate. Risedronate solution was injected into the sub-periosteum area adjacent to the left upper first molar. The right first molar served as a control with an injection of 0.9% NaCl solution. The topical administration of risedronate caused a significant and dose-dependent reduction of tooth movement after the orthodontic force was applied. In the second experiment, the right and left upper molars were first moved buccally for three weeks. The spring was then removed, and administration of risedronate was begun. The topical administration of risedronate inhibited relapse of the tooth in a dose-dependent manner. The administration of risedronate did not affect either overall growth of the animals or longitudinal growth of tibiae. These results suggest that topical application of risedronate may be helpful in anchoring and retaining teeth under orthodontic treatment.
引用
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页码:1478 / 1486
页数:9
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