Minor Tooth Movements Using Microimplant Anchorage: Case Reports

Sohn, Dong-Seok; Lee, Jung-Kwang; An, Kyung-Mi

doi:10.1097/id.0b013e318166da1d

Cited by 12 publications

(13 citation statements)

References 17 publications

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“…However, molar intrusion is considered rather difficult due to resistance at the furcation and interradicular area [2]. To intrude overerupted molars, traditional methods such as conventional fixed appliances and high-pull headgear are limited by multiple factors such as patients’ compliance, discomfort and anchorage loss [3], [4]. In contrast, therapy for overerupted molars in hyperdivergent patients with scissor-bite using traditional orthodontic treatment is a significant challenge.…”

Section: Introductionmentioning

confidence: 99%

Volumetric Measurement of Root Resorption following Molar Mini-Screw Implant Intrusion Using Cone Beam Computed Tomography

Chen

Zhang

et al. 2013

PLoS ONE

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ObjectiveMolar intrusion by mini-screw implantation can cause different degrees of root resorption. However, most methods (2-D and 3-D) used for evaluating root resorption have focused on the root length without considering 3-D resorption. The purpose of this study was to volumetrically evaluate root resorption using cone beam computed tomography(CBCT) after mini-screw implant intrusion.Materials and Methods1. The volumes of 32 teeth were measured using CBCT and laser scanning to verify the accuracy of CBCT. 2. Twelve overerupted molars from adult patients were investigated in this study. After mini-screw implants were inserted into the buccal and palatal alveolar bones, 150 g of force was applied to the mini-screw implants on each side to intrude the molars. CBCT images of all patients were taken immediately prior to intrusion and after intrusion. The volumes of the roots were calculated using the Mimics software program. The differences between the pre-intrusion and post-intrusion root volumes were statistically evaluated with a paired-samples t-test. In addition, the losses of the roots were statistically compared with each other using one-way analysis of variance at the P<0.05 level.ResultsNo statistically significant volume differences were observed between the physical (laser scanning) and CBCT measurements (P>0.05). The overerupted molars were significantly intruded (P<0.05), and the average intrusion was 3.30±1.60 mm. The differences between the pre-intrusion and post-intrusion root volumes were statistically significant for all of the roots investigated (P<0.05). The roots were sorted by volume loss in descending order as follows: mesiobuccal, palatal, and distobuccal. Statistical significance was achieved among the three roots. The average total resorption for each tooth was 58.39±1.54 mm3.ConclusionVolume measurement using CBCT was able to effectively evaluate root resorption caused by mini-screw intrusion. The highest volume loss was observed in the mesiobuccal root among the three roots of the investigated first molar teeth.

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Section: Introductionmentioning

confidence: 99%

Volumetric Measurement of Root Resorption following Molar Mini-Screw Implant Intrusion Using Cone Beam Computed Tomography

Chen

Zhang

et al. 2013

PLoS ONE

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“…It is a predictable option with fewer side effects. [45] Recent studies have revealed that the average intrusion of maxillary molars is between 3 and 4 mm and a combination of single miniscrew implant and fixed appliance (partial) is a predictable and effective procedure to achieve maxillary molar intrusion. [47] No definite consensus exists as to where the miniscrew implant should be placed (buccal or palatal) if a single screw is used for maxillary first molar intrusion.…”

Section: Discussionmentioning

confidence: 99%

“…[123] Preprosthodontic intrusion of overerupted tooth with the aid of miniscrew implants is less invasive and simplistic. [45]…”

Section: Introductionmentioning

confidence: 99%

Intrusion of an overerupted molar using orthodontic miniscrew implant: A preprosthodontic therapy

Sivakumar

2014

Contemp Clin Dent

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The purpose of this case report is to demonstrate the use of orthodontic miniscrew implant in the intrusion of overerupted molar as a preprosthodontic therapy. A 37-year-old woman with an overerupted maxillary right first molar encroaching on the opposing mandibular edentulous space was successfully intruded using a single miniscrew implant and partial fixed orthodontic appliance. The prosthodontic clinician may adopt this conservative and cost-effective strategy in their routine practice and avoid clinical crown reduction.

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“…Molar uprighting requires good anchorage control, and subsequently, a full-arch fixed appliance is necessary. Furthermore, ankylosed teeth, dental implants, and extraoral appliances could also be effective, enhancing anchorage, and protecting from undesirable tooth movements [ 8 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Mandibular molar uprighting using orthodontic miniscrew implants: a systematic review

2018

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The purpose of this systematic review was to identify studies and present the use of miniscrew implants (MIs) as an alternative treatment to mandibular molar uprighting. An electronic search and handsearching were conducted by two independent reviewers to identify relevant articles, published up to January 27, 2017. In order to methodologically assess the eligible studies, a pilot checklist consisting of 22 items was also implemented. After exclusion of all the irrelevant papers, only 17 studies were included, presenting 27 cases of mandibular molar uprighting in all planes using both direct and indirect force traction by MIs. Regarding the quality evaluation, the mean score of the included studies was 13.2, indicating a rather poor methodology implemented in the majority of the included cases. Due to many advantages, MIs provide a unique treatment alternative and constitute a reliable solution for treating tipped or impacted molars. Regarding the force application, a direct method is simpler, as it requires one MI and a single bracket or button, minimizing the patient’s discomfort and also reducing chair time compared to more complex indirect anchorage. It also eliminates the possibility of unwanted movement of the anchorage unit, which can occur even with indirect anchorage as a result of technical errors. However, direct anchorage has limitations in cases of lingually tipped or rotated molars because a single force may be insufficient to upright the tooth.

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Minor Tooth Movements Using Microimplant Anchorage: Case Reports

Cited by 12 publications

References 17 publications

Volumetric Measurement of Root Resorption following Molar Mini-Screw Implant Intrusion Using Cone Beam Computed Tomography

Volumetric Measurement of Root Resorption following Molar Mini-Screw Implant Intrusion Using Cone Beam Computed Tomography

Intrusion of an overerupted molar using orthodontic miniscrew implant: A preprosthodontic therapy

Mandibular molar uprighting using orthodontic miniscrew implants: a systematic review

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