The use of mini-implants in en masse retraction for the treatment of bimaxillary dentoalveolar protrusion

Aljhani, Ali S.; Zawawi, Khalid H.

doi:10.1016/j.sdentj.2009.12.007

Cited by 19 publications

(15 citation statements)

References 19 publications

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“…In the present investigation, the upper anterior teeth of bimaxillary patients were mainly retracted with bodily movement, interpreted as en masse retraction provided by miniscrews (Aljhani and Zawawi, 2010). The controlled tipping movement is a favorable pattern but might induce more obvious dehiscence during retraction of the protruded maxillary incisors (Årtun and Urbye, 1988), which needs to be further verified.…”

Section: Discussionmentioning

confidence: 70%

Three-dimensional evaluation of upper anterior alveolar bone dehiscence after incisor retraction and intrusion in adult patients with bimaxillary protrusion malocclusion

Guo

Zhang

Liu

et al. 2011

J. Zhejiang Univ. Sci. B

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Abstract:Objective: The purpose of this study was to evaluate three-dimensional (3D) dehiscence of upper anterior alveolar bone during incisor retraction and intrusion in adult patients with maximum anchorage. Methods: Twenty adult patients with bimaxillary dentoalveolar protrusion had the four first premolars extracted. Miniscrews were placed to provide maximum anchorage for upper incisor retraction and intrusion. A computed tomography (CT) scan was performed after placement of the miniscrews and treatment. The 3D reconstructions of pre-and post-CT data were used to assess the dehiscence of upper anterior alveolar bone. Results: The amounts of upper incisor retraction at the edge and apex were (7.64±1.68) and (3.91±2.10) mm, respectively, and (1.34±0.74) mm of upper central incisor intrusion. Upper alveolar bone height losses at labial alveolar ridge crest (LAC) and palatal alveolar ridge crest (PAC) were 0.543 and 2.612 mm, respectively, and the percentages were (6.49±3.54)% and (27.42±9.77)%, respectively. The shape deformations of LAC-labial cortex bending point (LBP) and PAC-palatal cortex bending point (PBP) were (15.37±5.20)° and (6.43±3.27)°, respectively. Conclusions: Thus, for adult patients with bimaxillary protrusion, mechanobiological response of anterior alveolus should be taken into account during incisor retraction and intrusion. Pursuit of maximum anchorage might lead to upper anterior alveolar bone loss.

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Section: Discussionmentioning

confidence: 70%

Three-dimensional evaluation of upper anterior alveolar bone dehiscence after incisor retraction and intrusion in adult patients with bimaxillary protrusion malocclusion

Guo

Zhang

Liu

et al. 2011

J. Zhejiang Univ. Sci. B

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“…During the last 2 decades, numerous studies have reported the success and acceptance of mini-implants in facilitating orthodontic mechanics. 5 , 6 , 25 In this respect, orthodontic treatment has been increasingly affected by the success, or failure of orthodontic mini-implants due to the increasing frequency of their use. 26 , 27 In a clinical situation, during mini-implant placement, a patient under minimum infiltration anesthesia could still feel discomfort during insertion of mini-implant, if it contacts the adjacent root surface, and the practitioner can easily change the placement direction to minimize root contact.…”

Section: Discussionmentioning

confidence: 99%

“…The radiographs used in the current study were for mini-implants inserted distal to the maxillary canine because this is considered a preferable site and ease of accessibility for various orthodontic mechanics. 5 , 6 , 8 , 29 , 30 Moreover, the current study assessed the actual final position of mini-implants in relation to the root proximity using CBCT, which previously could not be carried out using conventional 2D, radiographs. 16 The CBCT data allowed for accurate localization of the mini-implant position and assessment with regard to bone contact, bone penetration, and iatrogenic consequences.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of mini-implant sites in the posterior maxilla using traditional radiographs and cone-beam computed tomography

Abbassy

Sabban

Hassan

et al. 2015

SMJ

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Objectives:To evaluate the accuracy of using routine 2-dimensional (2D) radiographs (panoramic and periapical) when evaluating the position of orthodontic temporary anchorage devices (mini-implants) in the maxilla, and to compare the results to 3-dimensional cone-beam computed tomography (CBCT).Methods:This cross-sectional study was conducted at King Abdulaziz University, Faculty of Dentistry, Jeddah, Kingdom of Saudi Arabia from February 2014 to January 2015. Panoramic and periapical radiographs were used to examine the position of mini-implants in relation to the adjacent roots. Rating of mini-implants position was performed by 82 dentists from different specialties, using 2 D images according to the following criteria: 1) away from the root; 2) mini-implant tip appears touching the lamina dura; and 3) mini-implant overlays the lamina dura. The results were compared with CBCT findings.Results:There was no difference between dentists from different specialties when rating the position of the mini-implants (Cronbach’s alpha=0.956). The accuracy of the periapical images was 45.1%, while the panoramic images 33.6%. However, both panoramic and periapical radiographs were significantly inaccurate when assessing the mini-implant position when compared with the CBCT findings (p=0.0001).Conclusion:Three-dimensional CBCT technology allows better visualization of mini-implant placement. The use of CBCT when assessing the position of mini-implants is recommended.

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“…The orthodontic (mini)implants simplify the biomechanics in multiple situations and, in terms of anchorage, they eliminate the need for auxiliary appliances [1,2,3]. The literature regarding orthodontic implants is extensive, and their introduction respresents a revolution in orthodontic strategy [1,2,3,4,5,6,7,8]. Treatment planning must include radiographic examination for an accurate placement position.…”

Section: Introductionmentioning

confidence: 99%

Implant Anchorage in Orthodontic Retrusion: A Case Report

Szuhanek

Grigore

2019

JDOI

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Mini screws represent a new treatment modality in orthodontic biomechanics. They provide absolute anchorage, no secondary movements and reduced orthodontic treatment time. Futhermore, the surgical procedure for mini implants placement is quite simple and this type of treatment requires no patient compliance. We selected a clinical case in order to emphasize one of the most important indications of the mini implants: retrusion of the upper incisors for a incresed overjet case in a young patient. Two mini implants were placed in order to obtain the correction of the overjet and the retrusion of the anterior teeth. The retrusion was obtained in a reduced period of time using retraction devices on crimpable hooks.

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The use of mini-implants in en masse retraction for the treatment of bimaxillary dentoalveolar protrusion

Cited by 19 publications

References 19 publications

Three-dimensional evaluation of upper anterior alveolar bone dehiscence after incisor retraction and intrusion in adult patients with bimaxillary protrusion malocclusion

Three-dimensional evaluation of upper anterior alveolar bone dehiscence after incisor retraction and intrusion in adult patients with bimaxillary protrusion malocclusion

Evaluation of mini-implant sites in the posterior maxilla using traditional radiographs and cone-beam computed tomography

Implant Anchorage in Orthodontic Retrusion: A Case Report

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