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Case Reports
. 2023 May 14;10(5):879.
doi: 10.3390/children10050879.

Bimaxillary Dentoalveolar Protrusion Case Treated with Anchorage by Buccally Implemented Mini-Implants Using a 3D-Printed Surgical Guide

Georgios Vasoglou  1 , Athanasia Patatou  1 , Michail Vasoglou  2
Affiliations
Case Reports

Bimaxillary Dentoalveolar Protrusion Case Treated with Anchorage by Buccally Implemented Mini-Implants Using a 3D-Printed Surgical Guide

Georgios Vasoglou et al. Children (Basel). .

Abstract

The article presents a case of bimaxillary dentoalveolar protrusion treated by distalizing the upper and lower teeth, using anchorage from mini implants. A 16-year-old male patient presented with severe upper and lower incisor proclination with protruding lips and a convex profile, with a background of bimaxillary dentoalveolar protrusion. Instead of having four premolars extracted, retraction of the dentition was decided with absolute anchorage, provided by mini implants. In order to carry out the procedure in one stage, four mini-implants were inserted as close to the root of the 1st molars as possible. Implementation was facilitated by a surgical template which was created on a digital model and then 3D printed. Accurate placement was achieved and the case was successfully treated by significant uprighting of the incisors and retraction of the anterior dentition, closing the spaces in the upper and lower arch. Facial aesthetics were also improved. A digitally designed surgical guide was utilized in this case of bimaxillary dentoalveolar protrusion in order to facilitate the accurate placement of the mini implants which were used for a one-stage retraction of the dentition.

Keywords: 3D printing; CBCT; bimaxillary protrusion; mini-implants; surgical guide.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Pretreatment facial photographs.
Figure 2
Figure 2
Pretreatment intraoral photographs.
Figure 3
Figure 3
(a) Lateral cephalogram, (b) tracing and (c) panoramic X-ray before treatment.
Figure 4
Figure 4
Virtual mini-implants placed on the digital model. (a) Upper jaw; (b) lower jaw.
Figure 5
Figure 5
The surgical guide on the digital model. (a) Upper jaw; (b) lower jaw.
Figure 6
Figure 6
The .stl models of the surgical guides. (a) Upper jaw guide; (b) lower jaw guide.
Figure 7
Figure 7
Implementation of mini-implants utilizing the 3D-printed surgical guides. (a) Upper jaw; (b) lower jaw.
Figure 8
Figure 8
Retraction of upper and lower dentition using elastic chains and anchorage from the mini-implants.
Figure 9
Figure 9
CBCT imaging during retraction with mini-implants in place.
Figure 10
Figure 10
Posttreatment facial photographs of the patient.
Figure 11
Figure 11
Posttreatment intraoral photographs of the patient.
Figure 12
Figure 12
(a) Posttreatment lateral cephalogram and (b) tracing.
Figure 13
Figure 13
Superimposition of pre and posttreatment tracings on the anterior cranial base (red line: pretreatment, black line: posttreatment).
See this image and copyright information in PMC

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