Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2021 Sep 1;13(9):e866-e872.
doi: 10.4317/jced.58095. eCollection 2021 Sep.

Radiographic healing patterns after tooth-borne distraction in canine model

Francisco Vale  1 , Raquel Travassos  1 , João Martins  2 , José-Pedro Figueiredo  3 , João-Pedro Marcelino  4 , Inês Francisco  1
Affiliations

Radiographic healing patterns after tooth-borne distraction in canine model

Francisco Vale et al. J Clin Exp Dent. .

Abstract

Background: The osteogenesis distraction technique applied to the craniofacial skeleton is an alternative treatment for dentofacial deformities. Despite the advantages of tooth-borne distractors, few studies have evaluated their clinical implementation in sagittal dentoskeletal deformities. This study aimed provide a radiographic assessment of the effect of two different activations of tooth-borne distraction in the lengthening of the mandible in canines.

Material and methods: Ten male beagle dogs, approximately one year old, were used for this experimental study. Three remained as a control group and seven underwent a mandibular tooth-borne distraction protocol with single daily activation in one hemimandible and two daily activations in the other, during ten days. The consolidation period took 12 weeks. Occlusal radiographs were performed immediately pre- and postoperatively.

Results: After the distraction period, the host bone margins presented very well-defined outlines with regular contours. Concerning the consolidation period, between the second and fourth weeks, all hemimandibles showed small rectangular radiopaque regions with parallel orientation to the distraction axis. At the twelfth week, all hemimandibles presented an entire mineralization of the distraction gap with no axial deviations of the anterior and posterior host bone, nine of which with both margins showing corticalization.

Conclusions: Radiographic analysis showed bone regeneration in order to achieve the original bone architecture, especially in the group of multiple distraction. Tooth-borne distraction allowed successful sagittal lengthening of the mandible in a canine model. Key words:Orthodontics, osteogenesis, distraction, mandibular advancement, orthodontic appliance design.

PubMed Disclaimer

Conflict of interest statement

Conflicts of interest The authors declare that they have no conflict of interest.

Figures

Figure 1
Figure 1
Tooth-borne distractor, blocked, after the distraction period.
Figure 2
Figure 2
Workflow of experimental study.
Figure 3
Figure 3
Radiographic healing patterns: immediate postoperative radiograph (a), one week after osteotomy (b); ten days after distraction (c); with two weeks of the consolidation period (d); with four weeks of the consolidation period (e); with six weeks of the consolidation period (f); with eight weeks of the consolidation period (g); with ten weeks of the consolidation period (h); and, with twelve weeks of the consolidation period (i).
See this image and copyright information in PMC

Similar articles

See all similar articles

Cited by

References

    1. Proffit WR, Jackson TH, Turvey TA. Changes in the pattern of patients receiving surgical-orthodontic treatment. Am J Orthod Dentofac Orthop. 2013;143:793–8. - PMC - PubMed
    1. Sahoo NK, Issar Y, Thakral A. Mandibular Distraction Osteogenesis. J Craniofac Surg. 2019;30:e743–6. - PubMed
    1. Ilizarov GA. The Tension-Stress Effect on the Genesis and Growth of Tissues. Part I. The influence of stability of fixation and soft-tissue preservation. Clin Orthop Relat Res. 1989;238:249–81. - PubMed
    1. Cope JB, Samchukov ML, Cherkashin AM. Mandibular distraction osteogenesis: a historic perspective and future directions. Am J Orthod Dentofac Orthop. 1999;115:448–60. - PubMed
    1. Swennen G, Schliephake H, Dempf R, Schierle H, Malevez C. Craniofacial distraction osteogenesis: A review of the literature. Part 1: Clinical studies. Int J Oral Maxillofac Surg. 2001;30:89–103. - PubMed

LinkOut - more resources