Ramus screws: the ultimate solution for lower impacted molars

Chang, Chris H.; Lin, Joshua; Roberts, W. Eugene

doi:10.1053/j.sodo.2018.01.012

Cited by 23 publications

(21 citation statements)

References 22 publications

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“…Since the concept of orthodontic temporary anchorage devices (TADs) was introduced in 1945,(1) TADs have been expanding the scope of orthodontic treatments. (2)(3)(4) Due to their safety and clinical effectiveness, TADs have been well accepted by both orthodontists and patients. (5) TADs are used for multiple purposes, including anterior retraction, molar distalization, molar protraction, intrusion, traction of impacted teeth, multidisciplinary approaches, etc.…”

Section: Introductionmentioning

confidence: 99%

“…(9)(10)(11) Moreover, deeply-impacted mandibular molars could be easily and e ciently managed through mini-implants at mandibular ramus regions. (4) Thus, being absolute anchorage for orthodontic treatments, TADs are versatile in treating a variety of challenging patients with minimal undesirable tooth movements. (12)(13)(14)(15) However, it was reported that many orthodontists did not use TADs in their clinical practice due to lack of education and training on TADs.…”

Section: Introductionmentioning

confidence: 99%

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RETRACTED: Development of a Systematic Course On Orthodontic Temporary Anchorage Devices (TADs) for Orthodontic Residency Program

Tang

Gao

Chen

et al. 2021

Preprint

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Background: Orthodontic temporary anchorage devices (TADs) offer absolute anchorage for clinical orthodontics. No systematic course on TADs has been described so far. The objectives of this study were to develop a systematic course on orthodontic TADs and to determine its teaching outcome.Methods: Five modules (fundamentals, anatomic sites, clinical applications, complications and insertion techniques, FACCI) were designed in this FACCI course on TADs. A total of 61 orthodontic graduate students from Department of Orthodontics, West China Hospital of Stomatology, Sichuan University were enrolled in this study. Baseline levels on the use of TADs were surveyed through a before-course questionnaire and the teaching outcomes were assessed through an after-course questionnaire.Results: After the course, significantly more students were willing to insert TADs by themselves (p<0.001). Students were significantly more familiar with the clinical applications of TADs for different types of tooth movements (p<0.001) and the insertion techniques of TADs at different anatomic sites (p<0.001). Before the course, most of the students had no knowledge on addressing TADs-associated complication and they were significantly more familiar with the techniques and skills of addressing TADs-associated complication after the course (p<0.001).Conclusions: The FACCI course on orthodontic TADs was effective and promoted the clinical applications of TADs in clinical practice among orthodontic graduate students.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

RETRACTED: Development of a Systematic Course On Orthodontic Temporary Anchorage Devices (TADs) for Orthodontic Residency Program

Tang

Gao

Chen

et al. 2021

Preprint

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“…Regarding the stability of miniscrews depending on their insertion sites, Chang et al 28 suggested that the failure rate for miniscrews inserted in the interradicular space is higher than that in the retromolar area. Nevertheless, we prioritized the use of the cantilever mechanics considering its biomechanical advantage.…”

Section: Discussionmentioning

confidence: 99%

Biomechanical considerations for uprighting impacted mandibular molars

et al. 2020

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This case report demonstrates two different uprighting mechanics separately applied to mesially tipped mandibular first and second molars. The biomechanical considerations for application of these mechanisms are also discussed. For repositioning of the first molar, which was severely tipped and deeply impacted, a novel cantilever mechanics was used. The molar tube was bonded in the buccolingual direction to facilitate insertion of a cantilever from the buccal side. By twisting the distal end of the cantilever, sufficient uprighting moment was generated. The mesial end of the cantilever was hooked over the miniscrew placed between the canine and first premolar, which could prevent exertion of an intrusive force to the anterior portion of the dentition as a side effect. For repositioning of the second molar, an uprighting mechanics using a compression force with two step bends incorporated into a nickel-titanium archwire was employed. This generated an uprighting moment as well as a distal force acting on the tipped second molar to regain the lost space for the first molar and bring it into its normal position. This epoch-making uprighting mechanics could also minimize the extrusion of the molar, thereby preventing occlusal interference by increasing interocclusal clearance between the inferiorly placed two step bends and the antagonist tooth. Consequently, the two step bends could help prevent occlusal interference. After 2 years and 11 months of active treatment, a desirable Class I occlusion was successfully achieved without permanent tooth extraction.

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“…Direct anchorage is when the teeth moved directly towards or against the mini-screw. Chang et al, reported the use of a ramus screw to upright the complex impacted second molar [37]. An indirect anchorage refers to stabilizing certain teeth via a rigid connection with the mini-screw and subsequent use of these stabilized anchors to move other teeth in the dental arch [38].…”

Section: Temporary Anchorage Devicesmentioning

confidence: 99%

Review in the Treatment Decision of Modalities for Impacted Second Molar

Chianchitlert¹,

Selvido²,

Sirisoontorn³

et al. 2022

Clinical Concepts and Practical Management Techniques in Dentistry

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Impacted permanent tooth can occur on any tooth in the dental arch. The incidence of retention and impaction of the second molar lies between 0 and 2.3%. It is infrequently found in normal dental patients because most of the second molar impactions are asymptomatic. However, it is a common occurrence in orthodontic practice. The impacted second molar may provoke many pathologic disorders to the adjacent and opposite teeth, eventually malocclusions. There are many treatment modalities in facilitating the eruption of the second molar impaction. Early diagnosis and early treatment are crucial for the successful treatment of mandibular second molar impaction. This article presents an overview of various treatment modalities for an impacted second molar.

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Ramus screws: the ultimate solution for lower impacted molars

Cited by 23 publications

References 22 publications

RETRACTED: Development of a Systematic Course On Orthodontic Temporary Anchorage Devices (TADs) for Orthodontic Residency Program

RETRACTED: Development of a Systematic Course On Orthodontic Temporary Anchorage Devices (TADs) for Orthodontic Residency Program

Biomechanical considerations for uprighting impacted mandibular molars

Review in the Treatment Decision of Modalities for Impacted Second Molar

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