Open bite correction through molar intrusion with mini-implants

Argumedo, Adriana García; Prado, Patricia Shirley Castro; Núñez, Enrique Grageda

doi:10.1016/s2395-9215(16)30156-8

Cited by 2 publications

(1 citation statement)

References 8 publications

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“…Several etiological factors have been associated with the anterior open bite, including digits sucking habit, lip habits, anterior posture of the tongue at rest, large tongue, nasal obstruction, mouth breathing, hypertrophic tonsils and adenoids, neurological disturbances, muscular dystrophy, temporomandibular joint internal disorder, and skeletal growth abnormalities. 2,3 The anterior open bite is one of the most challenging cases to treat in adult patients. 4 Several surgical and non-surgical treatment approaches have been used to manage these cases.…”

Section: Introductionmentioning

confidence: 99%

Anterior Open Bite Treated by Maxillary Posterior Teeth Intrusion Using Zygomatic Miniplates: A Case Report

Asiry

2018

The Journal of Contemporary Dental Practice

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Aim: This case report aims to demonstrate the successful utilization of zygomatic miniplates in the treatment of an adult patient with anterior open bite (AOB). Background: During treatment of anterior open bite, incisor extrusion may compromise facial esthetics in cases with long facial height and/or sufficient incisor exposure at rest and smile.The intrusion of posterior teeth has the advantage of correcting vertical dimension and maintaining proper incisors show. Case description: The patient, a 22-year-old boy, had an anterior open bite of 4.5 mm with increased lower facial height, bilateral posterior crossbite, and two different occlusal planes in the upper arch. Titanium miniplates were used to intrude maxillary posterior teeth with a trans-palatal arch appliance to limit buccal tipping.The intrusive force was then applied through elastomeric chains placed bilaterally in the maxillary arch between the miniplate and posterior teeth.The anterior open bite was corrected within 7 months of intrusion with decreased lower facial heightand significant improvement in anteroposterior jaw relationship. Conclusion: This report emphasizes the significant role of facial appearance and smile. Clinical significance: Most of the non-surgical approaches are not suitable for open bite correction in cases with long facial height and/or sufficient incisor exposure at rest and smile because of their extrusive mechanics which compromise the facial and smile esthetics. The intrusion of posterior teeth using min iplates allowing a counterclockwise rotation of the mandible to correct anterior open bite without compromising facial esthetic and smile.

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Section: Introductionmentioning

confidence: 99%

Anterior Open Bite Treated by Maxillary Posterior Teeth Intrusion Using Zygomatic Miniplates: A Case Report

Asiry

2018

The Journal of Contemporary Dental Practice

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Intrusion of the maxillary posterior teeth with a single buccal mini-implant positioned bilaterally in young adults with a tendency towards hyperdivergence: A clinical study

Felicita

Wahab

2022

J Orthod

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Background: Skeletal anchorage systems have been used for intrusion of the posterior teeth with satisfactory results. To achieve this, mini-implants are placed at anatomically challenging sites such as the palate or require several mini-implants to produce the desired effect. Objective: To determine the magnitude of intrusion of the maxillary posterior teeth achieved on a continuous arch wire using a single buccal mini-implant placed bilaterally in young patients with a tendency towards hyperdivergence and to evaluate its influence on the skeletal, dental and soft-tissue structures. Methods: A total of 17 patients with proclination of the anterior teeth, tendency towards hyperdivergence and clockwise rotation of the mandible were selected. First premolars were extracted as part of treatment protocol. A 0.022-MBT bracket prescription was used. Mini-implants were placed bilaterally on the buccal aspect at the mucogingival junction or slightly gingival to it between the maxillary second premolar and first permanent molar. A total of 200 g of intrusive force was placed from a continuous 0.019 × 0.025 inch stainless-steel arch wire to the mini-implant by means of an elastomeric thread on both sides. Lateral cephalograms and study models were taken before the start of intrusion and six months later. Parametric and non-parametric tests were done to assess treatment results. Results: Significant intrusion was observed in the maxillary molar and premolar region with tendency towards intrusion in the anterior region. There was significant decrease in lower anterior facial height (LAFH) with anti-clockwise mandibular rotation, decrease in facial proportion index and total facial height. No changes were observed in the transverse plane. Conclusion: Intrusion of the permanent maxillary molar can be achieved on a continuous arch wire with a single buccal mini-implant placed bilaterally with improvement in facial aesthetics, especially in the vertical plane. This method may be beneficial in patients with borderline vertical discrepancy treated with conventional friction mechanics during space closure after first premolar extractions.

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Open bite correction through molar intrusion with mini-implants

Cited by 2 publications

References 8 publications

Anterior Open Bite Treated by Maxillary Posterior Teeth Intrusion Using Zygomatic Miniplates: A Case Report

Anterior Open Bite Treated by Maxillary Posterior Teeth Intrusion Using Zygomatic Miniplates: A Case Report

Intrusion of the maxillary posterior teeth with a single buccal mini-implant positioned bilaterally in young adults with a tendency towards hyperdivergence: A clinical study

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