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2 "Orthodontic extrusion"
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Case Report
An esthetic appliance for the management of crown-root fracture: a case report
Sang-Min Jeon, Kang-Hee Lee, Bock-Young Jung
Restor Dent Endod 2014;39(3):226-229.   Published online May 22, 2014
DOI: https://doi.org/10.5395/rde.2014.39.3.226
AbstractAbstract PDFPubReaderePub

Orthodontic extrusion is usually performed by means of a fixed orthodontic appliance that utilizes arch wire attached to adjacent teeth and transfers the desired force by elastic from the wire to the root. However, clinicians often encounter cases where the bonding required for tooth traction is not possible because the adjacent teeth have been restored with ceramic or veneer. The purpose of this case report is to describe a modified orthodontic extrusion appliance that is useful when conventional orthodontic treatment is not possible. The modified appliance was fabricated using an artificial tooth, clear plastic sheeting, and a braided fiber-reinforced composite strip that covered adjacent teeth without bonding. It satisfied the esthetic and functional needs of the patient and established the optimal biologic width.

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Basic Research
Clinical evaluation of a new extraction method for intentional replantation
Yong-Hoon Choi, Ji-Hyun Bae
J Korean Acad Conserv Dent 2011;36(3):211-218.   Published online May 31, 2011
DOI: https://doi.org/10.5395/JKACD.2011.36.3.211
AbstractAbstract PDFPubReaderePub
Purpose

Intentional replantation (IR) is a suitable treatment option when nonsurgical retreatment and periradicular surgery are unfeasible. For successful IR, fracture-free safe extraction is crucial step. Recently, a new extraction method of atraumatic safe extraction (ASE) for IR has been introduced.

Patients and Methods

Ninety-six patients with the following conditions who underwent IR at the Department of Conservative Dentistry, Seoul National University Bundang Hospital, in 2010 were enrolled in this study: failed nonsurgical retreatment and periradicular surgery not recommended because of anatomical limitations or when rejected by the patient. Preoperative orthodontic extrusive force was applied for 2-3 weeks to increase mobility and periodontal ligament volume. A Physics Forceps was used for extraction and the success rate of ASE was assessed.

Results

Ninety-six premolars and molars were treated by IR. The complete success rate (no crown and root fracture) was 93% (n = 89); the limited success rates because of partial root tip fracture and partial osteotomy were 2% (n = 2) and 5% (n = 5), respectively. The clinical and overall success rates of ASE were 95% and 100%, respectively; no failure was observed.

Conclusions

ASE can be regarded as a reproducible, predictable method of extraction for IR.

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