Korean J Orthod.  2011 Oct;41(5):361-370. 10.4041/kjod.2011.41.5.361.

Histologic assessment of the biological effects after speedy surgical orthodontics in a beagle animal model: a preliminary study

• Kim HS
• Lee YJ
• Park YG
• Chung KR
• Kang YG
• Choo H
• Kim SH

• KMID: 1975393
• DOI: http://doi.org/10.4041/kjod.2011.41.5.361

Abstract

OBJECTIVE
Speedy surgical orthodontics (SSO), an innovative orthodontic treatment, involves the application of orthopedic forces against temporary skeletal anchorage devices following perisegmental corticotomy to induce movement of specific dental segments. Herein, we report the biological effects of SSO on the teeth and periodontal structures.
METHODS
Five beagle dogs were divided into 2 groups and their 6 maxillary incisors were retracted en masse by applying 500 g orthopedic force against a single palatal mini-plate. Retraction was performed without and with perisegmental corticotomy in groups I and II, respectively. All animals were killed on the 70th day, and their periodontal structures were processed for histologic analyses and scanning electronic microscopy (SEM). The linear distance between the third maxillary incisor and canine was used as a benchmark to quantify the retraction amount.
RESULTS
Retraction was markedly faster and retraction amount greater in group II than in Group I. Surprisingly, Group II did not show any root resorption despite extensive retraction, while Group I showed prominent root surface irregularities. Similarly, SEM showed multiple resorption lacunae in Group I, but not in Group II.
CONCLUSIONS
SSO is an effective and favorable orthodontic approach for major en masse retraction of the maxillary anterior teeth.

Keyword

Speedy surgical orthodontics; Perisegmental corticotomy; Compression osteogenesis; en masse retraction; Root resorption; Mini-plate; Temporary skeletal anchorage device

MeSH Terms

Animals
Dogs
Electronics
Electrons
Incisor
Microscopy
Orthodontics
Orthopedics
Root Resorption
Tooth