Molar protraction using miniscrews (temporary anchorage device) with simultaneous correction of lateral crossbite: An orthodontic case report

Marusamy, Kavitha Odathurai; Ramasamy, S.; Wali, Othman

doi:10.4103/jispcd.jispcd_447_17

Cited by 6 publications

(6 citation statements)

References 19 publications

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“…It has been shown in the literature that TADs are successful in protracting the dentition to close spaces for missing teeth [38,39]. In the present study, a higher percentage of the dental students selected "a prosthetic implant" compared to those who elected "molar protraction".…”

Section: Discussionmentioning

confidence: 48%

Knowledge of undergraduate dental students toward orthodontic skeletal temporary anchorage devices at Kuwait University

Al-Melh

Alanzi

2020

BMC Med Educ

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Background The introduction of skeletal Temporary Anchorage Devices (TADs) into orthodontics has provided orthodontists with reliable techniques of correcting anchorage problems. The objective of this study was to evaluate the knowledge of undergraduate dental students during their clinical years (fifth, sixth and seventh-year) at Kuwait University Faculty of Dentistry regarding the use of TADs. Methods A printed structured questionnaire consisting of 21 questions was given to the undergraduate dental students of Kuwait University in the fifth (n = 22), sixth (n = 28) and seventh (n = 22)-years. It evaluated the level and source of information regarding orthodontic TADs. Results The seventh-year dental students displayed the best degree of knowledge regarding the use of TADs and the clinical case management, compared with the sixth and fifth-year dental students. The significance of introducing the orthodontic TADs topic earlier in the orthodontic curriculum has been agreed upon by 42% of respondents. The total knowledge score showed a significant difference (χ2 = 40.3, p = 0.000), where the seventh year dental students had the best level of knowledge regarding the topic of TADs. Two-thirds (63.6%) preferred to introduce that topic during the sixth year. Conclusions The senior (7th year) dental students had the best knowledge about the topic of TADs. Introducing the topic of TADs earlier in the undergraduate dental program will enhance the students’ case-based learning setup. Hence, the early exposure to use of TADs will improve the students’ clinical problem-solving and decision making skills during their undergraduate clinical years.

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Section: Discussionmentioning

confidence: 48%

Knowledge of undergraduate dental students toward orthodontic skeletal temporary anchorage devices at Kuwait University

Al-Melh

Alanzi

2020

BMC Med Educ

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“…Some studies have shown that there is a need for high anchorage control in molar protraction; according to them, with insufficient anchorage, there is a possibility of tipping of the molar and root resorption [52]. In an earlier research [53], in general, placing the miniscrew in the buccal area (due to the passage of the force through the buccal side of the center of resistance) could lead to unwanted expansion, while placing the miniscrew in the palatal area will reduce the width of the arch [53].…”

Section: Discussionmentioning

confidence: 99%

“…In other studies, the unwanted side effects of molar protraction were a buccal force, tipping of adjacent teeth, mesial rotation and buccalization of molar teeth, and crossbite [50]. In the study of Marusamy et al [52], during maxillary molar protraction, the archwire needs to be expanded at each visit to prevent crossbite due to tooth movement to a narrower arch area [52]. In the study of Holberg et al [30], mandibular molar protraction was compared using dental anchorage and miniscrew.…”

Section: Discussionmentioning

confidence: 99%

Effects of Rigid and Nonrigid Connections between the Miniscrew and Anchorage Tooth on Dynamics, Efficacy, and Adverse Effects of Maxillary Second Molar Protraction: A Finite Element Analysis

Mazhari

Moradinejad

Mazhary

et al. 2022

BioMed Research International

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Introduction. Direct, rigid indirect, and nonrigid indirect absolute anchorages using temporary anchorage devices (TADs, mini-implants/miniscrews) can provide promising opportunities for challenging, yet common, orthodontic tooth movements such as molar protraction. Rigid rectangular wire and ligature wire are the most common methods of attaching a tooth to a miniscrew in indirect anchorages. We aimed to provide a comparison of the rigidity of the connecting wire in terms of stress on the miniscrew, the anchorage loss, and the risk of root resorption using finite element analysis (FEA). Methods. The maxillary right second molar was protracted into the proximal space at a 150 g load (1) using direct absolute anchorage with a tapered miniscrew implanted between the premolar roots and using indirect absolute anchorage with the second premolar reinforced by the miniscrew through (2) a rigid stainless steel (SS) wire or (3) a nonrigid SS ligature wire (4) at different elastic moduli. Stresses and displacements of 4 models’ elements were measured. The risk of external root resorption was evaluated. Results. Connecting the tooth to the miniscrew using rigid full-size wire (model 2) compared to ligature (model 3) can give better control of the anchorage (using the ligature wire, the anchorage loss is 1.5 times larger than the rectangular wire) and may reduce the risk of root resorption of the anchorage unit. However, the risk of miniscrew failure increases with a rigid connection, although it is still lower than with direct anchorage. The miniscrew stress when using a ligature is approximately 30% of the rigid model using the rectangular wire. The miniscrew stress using the rectangular wire is approximately 82.4% of the miniscrew stress in the direct model. Parametric analysis shows that the higher the elastic modulus of the miniscrew-tooth connecting wire in the indirect anchorage, the less the anchorage loss/palatal rotation of the premolars/and the risk of root resorption of the anchorage teeth and instead the stress on the miniscrew increases. Conclusions. Direct anchorage (followed by rigid indirect anchorage but not nonrigid) might be recommended when the premolars should not be moved or premolar root resorption is a concern. Miniscrew loosening risk might be the highest in direct anchorage and lowest in nonrigid indirect anchorage (which might be recommended for poor bone densities).

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“…2 The treatment of choice in treating edentulous area should be the least invasive option that complies the expected esthetic and functional objectives. 3 In orthodontic treatment option, the protraction of second molars to the edentulous area becomes the preferred choice, with the support of bones and good oral hygiene. Orthodontic movement could be an excellent way to regain new alveolar bone and soft tissue when closing spaces and avoid crestal bone damage mesial to the second molars.…”

Section: Introductionmentioning

confidence: 99%

Reciprocal force generated by two sliding jigs: An alternative mechanic for molar protraction

Fashih

Kasita

Hardjono

et al. 2021

J Dentomaxillofac Sci

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Objective: When a first molar is lost, orthodontic replacement with second and third molars would be an excellent treatment option. There are some side effects that tend to occur during molar protraction, such as mesial tipping of molar that could increase the time required to correct. These side effects can be avoided by understanding the biomechanical variables affecting molar protraction. The author tries to present the modification of sliding jigs, instead of the power arm function, with additional of lingual force, for molar protraction. Methods: This case report describes the management of a 23-yearsold woman who was missing left mandibular first molar, had class III skeletal profile, and anterior crossbite. After anterior crossbite correction, the left mandibular first molar extraction spaces were closed by protraction of the second and third molars. Mesial tipping was detected in the early protraction phase when using conventional method. Consequently, uprighting procedure was done and protraction was continued using reciprocal force generated by two sliding jigs and lingual buttons to achieve bodily movement of tooth. Results: The result was excellent, the space was closed without tipping and rotation. Conclusion:The presented article provides an alternative mechanic for molar protraction using sliding jigs and how it can be designed to achieve predictable result.

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Molar protraction using miniscrews (temporary anchorage device) with simultaneous correction of lateral crossbite: An orthodontic case report

Cited by 6 publications

References 19 publications

Knowledge of undergraduate dental students toward orthodontic skeletal temporary anchorage devices at Kuwait University

Knowledge of undergraduate dental students toward orthodontic skeletal temporary anchorage devices at Kuwait University

Effects of Rigid and Nonrigid Connections between the Miniscrew and Anchorage Tooth on Dynamics, Efficacy, and Adverse Effects of Maxillary Second Molar Protraction: A Finite Element Analysis

Reciprocal force generated by two sliding jigs: An alternative mechanic for molar protraction

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