Zygomatic anchorage for molar intrusion in adult open-bite patients

Marzouk, Eiman; Abdallah, Essam; El-Kenany, Walid; Fata, Mohamed

doi:10.21608/eos.2012.78828

Cited by 5 publications

(12 citation statements)

References 26 publications

(49 reference statements)

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“…Orthodontics utilizing tads, mini-screws, or miniplates can be utilized to intrude the posterior teeth and allow the jaw to autorotate forward, facilitating the ideal jaw relationship and facial form. [45][46][47][48][49] This intrusion will also decrease vertical dimension, thereby enabling the patient to bring their lips together with more ease, and may improve their breathing. This treatment has been shown to be an effective method in managing AI patients.…”

Section: Discussionmentioning

confidence: 99%

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Amelogenesis imperfecta: More than just an enamel problem

Morr¹

2023

J Esthet Restor Dent

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Objectives This article will provide an overview of the clinical presentation, treatment considerations, and sequencing of treatment for a patient with amelogenesis imperfecta (AI). The different types and subgroups of AI will be described, focusing on Type I hypoplastic form of the condition. Overview Patients with AI all have abnormal enamel formation but some may also present with vertical dysgnathia, anterior open bite, and posterior crossbite. A case report demonstrates the sequencing and implementation of necessary orthodontic and prosthodontic treatments, beginning in the mixed dentition and ending with esthetic and functional permanent restorations in the permanent dentition. Clinical Significance AI is a disorder of tooth enamel formation but may also affect the face, jaw relationship, occlusion, compromised esthetics, and can potentially cause psychological damage due to the appearance of the teeth. Treatment of AI should be initiated at a young age.

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Section: Discussionmentioning

confidence: 99%

“…By reducing the vertical dimension, lip closure can be improved. Molar intrusion has been shown to be an effective treatment method in treating an AOB 47,48 . There is however always a risk of relapse after using skeletal anchorage and molar intrusion.…”

Section: Clinical Management Of Type I Hypoplastic Aimentioning

confidence: 99%

Amelogenesis imperfecta: More than just an enamel problem

Morr¹

2023

J Esthet Restor Dent

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“…The envelope of intrusive movement with TADs affects treatment planning. 4 - 11 The mean amount of molar intrusion with TADs has been clarified and ranges from 2.1 mm to 4 mm. 4 - 6 , 10 , 12 , 13 For extreme supra-erupted second molars, intrusion can reach 8 mm.…”

Section: Introductionmentioning

confidence: 99%

“…After many clinical trials in the application of TADs, controlling the posterior dentoalveolar height by intruding the molars into the supporting bone became achievable. Molar intrusion with TADs is now a predictable technique for correcting over-erupted molars and flattening the occlusal plane 4,5 or reducing posterior dentoalveolar height [6][7][8][9][10][11] for counterclockwise rotation of the mandible.…”

Section: Introductionmentioning

confidence: 99%

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Histological analysis on tissues around orthodontically intruded maxillary molars using temporary anchorage devices: A case report

Tsai

Chang

et al. 2023

Korean J Orthod

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Before progress was recently made in the application of temporary anchorage devices (TADs) in bio-mechanical design, orthodontists were rarely able to intrude molars to reduce upper posterior dental height (UPDH). However, TADs are now widely used to intrude molars to flatten the occlusal plane or induce counterclockwise rotation of the mandible. Previous studies involving clinical or animal histological evaluation on changes in periodontal conditions after molar intrusion have been reported, however, studies involving human histology are scarce. This case was a Class I malocclusion with a high mandibular plane angle. Upper molar intrusion with TADs was performed to reduce UPDH, which led to counterclockwise rotation of the mandible. After 5 months of upper molar intrusion, shortened clinical crowns were noticed, which caused difficulties in oral hygiene and hindered orthodontic tooth movement. The mid-treatment cone-beam computed tomography revealed redundant bone physically interfering with buccal attachment and osseous resective surgeries were followed. During the surgeries, bilateral mini screws were removed and bulging alveolar bone and gingiva were harvested for biopsy. Histological examination revealed bacterial colonies at the bottom of the sulcus. Infiltration of chronic inflammatory cells underneath the non-keratinized sulcular epithelium was noted, with abundant capillaries being filled with red blood cells. Proximal alveolar bone facing the bottom of the gingival sulcus exhibited active bone remodeling and woven bone formation with plump osteocytes in the lacunae. On the other hand, buccal alveolar bone exhibited lamination, indicating slow bone turnover in the lateral region.

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An innovative approach for treatment of anterior open bite in Class II division 1 patient with zygomatic implant and spur assisted appliance - A case report

Faseehuddin,

Chowdary,

Patil

et al. 2023

IJODR

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Controlling anchorage is one of the foremost necessary aspects of treatment. Moderate anchorage is comparatively simple to manage with the use of some intraoral appliances and biomechanical procedures. On the opposite hand, cases that need the most anchorage need extraoral support to strengthen the anchorage. In some instances, 100 percent anchorage has got to be maintained, such an anchorage may be termed as absolute anchorage. It's tough and not possible to get absolute anchorage by using typical ways like extraoral force application. In this case report, we describe the treatment of Open bite by using the support of Zygomatic plates and Spurs anteriorly placed with the combination of posterior bite blocks.A 20-year-old female reported to our department of orthodontics with the chief complaint of anteriorly placed upper front teeth. There was no relevant medical history; she was having tongue thrusting habit, acute nasolabial angle and incompetent lips. Overjet of 12mm and anterior skeletal open bite from canine to canine of 5mm was present associated with anterior tongue thrusting habit, and constricted upper arch. The molar relation was end-on on the right side and class II on left side. Canine relation is end-on, on both the side. Growth pattern is vertical. Upper arch is well aligned with constriction in premolar region; lower arch has crowding of 6 mm. The treatment plan was selected as alignment of the teeth with fixed mechanotherapy and impaction of the maxillary posteriors using zygomatic anchorage with posterior bite block and spurs soldered to the anterior part of the appliance. The sutures were removed after 7 days, the appliance was into the patient’s mouth and secured with a power chain to the hooks of the appliance and the hook of zygomatic implant, 400gms of force was applied on both the sides.

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Zygomatic anchorage for molar intrusion in adult open-bite patients

Cited by 5 publications

References 26 publications

Amelogenesis imperfecta: More than just an enamel problem

Amelogenesis imperfecta: More than just an enamel problem

Histological analysis on tissues around orthodontically intruded maxillary molars using temporary anchorage devices: A case report

An innovative approach for treatment of anterior open bite in Class II division 1 patient with zygomatic implant and spur assisted appliance - A case report

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