Correction of bilateral heavily impacted second molar with improved super-elastic nickel-titanium alloy wires

Okihara, Hidemasa; Ono, Takashi

doi:10.1016/j.ajodo.2019.03.033

Cited by 9 publications

(5 citation statements)

References 30 publications

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“…Consequently, the eruption space of MM2 was smaller in impacted groups. As some ndings [15,16] showed that early extraction of uneruped MM3 would lower the risk of the impacted MM2 and increase the eruption space of MM2. Furthermore, the incident pathology of MM2 such as distal caries and periodontal diseases could be avoided.…”

Section: Discussionmentioning

confidence: 99%

WITHDRAWN: Clinical Oral Investigations Comparison of localized mandible morphology between patients with impacted and non-impacted mandibular second molars in three dimensions

Zhou

Huang

Zhang

et al. 2022

Preprint

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Objectives To investigate the morphological differences of localized mandible between patients with impacted mandibular second molars (MM2) and non-impacted patients through mandibular measurements in three dimensions. Materials and methods The 222 subjects who underwent cone-beam computed tomography (CBCT) were included and divided into three groups. Group 1 (G1) comprised 64 patients with unilaterally impacted MM2, group 2 (G2) was composed of 54 patients with bilaterally impacted MM2, and group 3 (G3) was made up of 104 age- and sex-matched controls. 24 measurements were selected, including 21 linear measurements and 3 angular measurements. Results The width of mandibular first molar (MM1), the length and width of MM2, the angle between MM1 and MM2, the angle between MM2 and ascending mandibular ramus (MR) were higher in G1 and G2 than in G3 (P < 0.05). Also, the length of MM1 and MM2, the angle between MM1 and MM2 were statistically higher in the impacted side than in the non-impacted side for G1. There was positive correlation between impacted MM2 and the length, the width of MM2, the angle between MM2 and MR, but the length between MM1 and MR, the length of alveolar bone for eruption of MM2 had negative effects. Conclusions The crown of MM1 and MM2 were larger in the patient of impacted MM2. The eruption space of MM2 was insufficient, while the width of mandibular arch were not affected in impacted patients. Clinical Relevance Impacted mandibular second molars are more common in clinic.

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Section: Discussionmentioning

confidence: 99%

WITHDRAWN: Clinical Oral Investigations Comparison of localized mandible morphology between patients with impacted and non-impacted mandibular second molars in three dimensions

Zhou

Huang

Zhang

et al. 2022

Preprint

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“…21,22 In the straight-wire technique, nickel-titanium (NiTi) wires, open coil springs, and elastic separators are mostly used. 14,15,[27][28][29] Lau et al presented a method using a 0.016-0.022-inch copper-NiTi archwire with a push-coil spring to create space for the eruption of impacted mandibular second molars. 14 Mansour et al introduced the molar uprighting simplified technique (MUST) in which a NiTi wire was passed through a double tube attached to the second molar and a single tube attached to the first molar, emerging at the distal end through the second molar auxiliary tube and ligated to the premolar.…”

Section: Orthodontic Uprightingmentioning

confidence: 99%

“…However according to case studies, the average uprighting treatment time ranged from 2 weeks to 15 months. 7,21,28,29…”

Section: Orthodontic Uprightingmentioning

confidence: 99%

Comparison between orthodontic and surgical uprighting of mandibular molars: a systematic review

Karkazi¹,

Karvelas²,

Alexiou³

et al. 2022

The Angle Orthodontist

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Objectives To evaluate and compare the efficiency of orthodontic treatment and surgical uprighting of first and second mandibular molars. Materials and Methods An electronic literature search in PubMed, Science Direct, Embase, Scopus, Web of Science, Cochrane Library, LILACS, and Google Scholar, as well as a hand search was conducted by two independent researchers to identify relevant articles up to January 2022. In addition, a manual search was done that included article reference lists, grey literature, and dissertations. The risk of bias of the included prospective and retrospective studies was assessed with the Risk Of Bias Tool In Non-randomized Studies of Interventions (ROBINS-I) assessment tool. Results A total of six nonrandomized clinical trials (non-RCT) evaluating the efficiency of mandibular molar orthodontic and/or surgical uprighting were included. The quality analysis showed certain defects of the Non-RCTs included and, according to the criteria used, the majority of the articles were judged to be of moderate quality. Conclusions Based on the evidence, orthodontic and surgical uprighting appear to be effective treatment methods for mandibular molars. Surgical uprighting may be associated with more complications than orthodontic uprighting. However, the existing literature on the subject is limited, heterogeneous, and methodologically limited. Therefore, the outcomes should be interpreted carefully.

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“…The source of anchorage is a major consideration in planning orthodontic treatment and the myriad of designs reported in our literature speaks to the boundless imagination of clinicians. Various types of springs, loops, and uprighting arches can be used successfully with only minor changes to the anchorage teeth [ 2 , 9 , 17 , 33 , 37 , 38 , 40 , [44] , [45] , [46] , [47] , [48] , [49] , [50] , [51] , [52] , [53] , [54] , [55] , [56] ]. For absolute anchorage, miniscrews can be used in the retromolar area, or more anteriorly between the roots of the molar and/or premolars for either direct or indirect anchorage [ 9 , 11 , 39 , 41 , [57] , [58] , [59] , [60] , [61] ].…”

Section: Clinical Managementmentioning

confidence: 99%

“…[ 7 ] states “a more cautious approach is to postpone extracting the third molar until the repositioned second molar appears to be sufficiently stable.” This approach is most indicated in an adolescent patient in whom the third molar is still developing distal to the impacted second molar. In an adult patient where the third molar may have erupted mesially and may be lying on top of the second molar, the extraction of the third molar or orthodontically uprighting it to provide access to the second molar, would be necessary [ 9 , 38 , 39 , 41 , 56 ].…”

Section: Treatment Optionsmentioning

confidence: 99%

The management of mesially inclined/impacted mandibular permanent second molars

Turley

2020

Journal of the World Federation of Orthodontists

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Mesially impacted mandibular second molars are a common occurrence in orthodontic practices, especially those using the lingual arch or lip bumper for alleviating anterior crowding. Horizontally impacted second molars, on the other hand, occur so infrequently that most practitioners have limited experience in treating such a patient. Because of this there is little consensus on the management of these cases. As opposed to vertically impacted molars that may be associated with ankylosis or other factors preventing eruption, the mesially angulated, horizontally impacted mandibular second molar usually has eruption potential, because its impaction is more commonly due to lack of space and/or abnormal eruption path. Hence, orthodontic uprighting shows the most promise and can commonly be done without extracting the third molar or surgically exposing the impacted second molar. Modern clinicians have at their disposal a myriad of biomechanical choices that can be used to successfully reposition these teeth and enable finishing with an optimal occlusion.

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Correction of bilateral heavily impacted second molar with improved super-elastic nickel-titanium alloy wires

Cited by 9 publications

References 30 publications

WITHDRAWN: Clinical Oral Investigations Comparison of localized mandible morphology between patients with impacted and non-impacted mandibular second molars in three dimensions

WITHDRAWN: Clinical Oral Investigations Comparison of localized mandible morphology between patients with impacted and non-impacted mandibular second molars in three dimensions

Comparison between orthodontic and surgical uprighting of mandibular molars: a systematic review

The management of mesially inclined/impacted mandibular permanent second molars

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