A three-dimensional positioning guide for accurate mini-screw insertion Design and clinical application / 中国组织工程研究
Chinese Journal of Tissue Engineering Research
;
(53): 2593-2596, 2009.
Artículo
en Chino
| WPRIM
| ID: wpr-406562
ABSTRACT
BACKGROUND:
Mini-screw anchorage is an innovation technique applied in the orthodontic field, expanding the treatment ability of orthodontic appliance. Accurate of mini-screw insertion in the target position is a clinical problem which making orthodontist trouble in this technique application.OBJECTIVE:
To introduce a kind of three dimensional guide of mini-screw used as anchorage in orthodontic treatment and to evaluate the positioning accuracy. DESIGN, TIME AND SE'I-rlNG A contrast study was performed at the Department of Orthodontics, Capital Medical University from April to October 2005.PARTICIPANTS:
Twenty cases (40 mini-screws) of maxillary critical anchorage requisition were considered as the experimental group, and 15 cases (30 mini-screws) who were not treated with surgical guide were considered as the control group.METHODS:
Self-made stent was used as a positioning guide for implantation of mini-screw anchorage between the roots of upper second bicuspid and first molar. Thereafter, the position was measured. MAIN OUTCOMEMEASURES:
The vertical distance from measure points to the reference middle line were measured.RESULTS:
In 40 mini-screws inserted with the aid of surgical guide, the average survival time of mini-screw as anchorage was 10.3 months, 2 were lost, and the success rate was 95%. The average survival time of 30 mini-screws in the control group was 9 months, 9 were loss, and the success rate was 70%. The positioning measurement showed that deviation of mini-screw was not found in the experimental group, but it was found in the control group.CONCLUSION:
By aid of surgical guide splint, mini-scraw can be inserted correctly into the target region.
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Idioma:
Chino
Revista:
Chinese Journal of Tissue Engineering Research
Año:
2009
Tipo del documento:
Artículo
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