Stress Distribution and Displacement of Maxillary Anterior Teeth During En-masse Intrusion and Retraction: A FEM Study

Bohara, Parag; Kumar, Mukesh; Sharma, Hemant; Jayprakash, Poonam K; Misra, Vivek; Savana, Khumanthem

doi:10.1177/0974909820170303

Cited by 5 publications

(2 citation statements)

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“…Among all orthodontic tooth movement, intrusion is probably the most detrimental in orthodontics. These forces generates stress that can cause changes on the tooth structure and periodontal ligament [21,23] In this case report the maxillary incisors were intruded 0.49 mm/month and the total rate of intrusion was 2.4 ± 0.8, which makes CIN very efficient and successful in treatment of deep bite [24,25].…”

Section: Discussionmentioning

confidence: 99%

DEEP BITE CORRECTION BY INCISORS INTRUSION WITH CONNECTICUT INTRUSION ARCH - case report

Trpevska¹,

Tanatarec

Srbinoska³

et al. 2021

JMS

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Deep overbite as one of the most common malocclusion that can occur along with other associated malocclusions can be treated with several mechanisms.One such mechanics is true intrusion of anterior teeth. Deep overbite correction by intrusion of anterior teeth affords a number of advantages and is the desired treatment option for gummy smile correction, esthetics improvement as well as correction of mandible rotation in order to improve vertical dimension and to correct Class II malocclusion.This case report describes the orthodontic treatment of a 17-year-old patient diagnosed as severe Angle's Class II malocclusion with maxillary prognathism and skeletal deep bite, dental Class II division 1 malocclusion associated with 4 mm overbite, an increased overjet and excessive gingival display on smiling.After the analyses and due to the fact that the patient avoided surgical method for her malocclusion correction, our treatment plan in this case was alternative (camouflage) with upper premolars extraction.In the first phase we did 9 mm canine retraction with preserved vertical dimensions of upper incisors. In the second phase of our treatment we did incisor intrusion and en masse retraction of the incisors. Intrusion of upper incisors was done using a 0.017 × 0.025 Connecticut intrusion arch and 0.019 x 0.025 stainless steel as base archwire was used. Outstanding results were achieved with an improved facial profile, smile harmony and stable occlusal relationships.Through this case report we highlight the efficiency of Connecticut intrusion arch as а clinically manageable biomechanical system to optimize the orthodontic treatment. The use of good biomechanical principles helped us to achieve all treatment goals and objectives with minimal side effects.

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Section: Discussionmentioning

confidence: 99%

DEEP BITE CORRECTION BY INCISORS INTRUSION WITH CONNECTICUT INTRUSION ARCH - case report

Trpevska¹,

Tanatarec

Srbinoska³

et al. 2021

JMS

View full text Add to dashboard Cite

show abstract

“…When it comes to the biomechanical aspects of orthodontic tooth movement [ 5 ], much research has employed laser holography, strain gauge methods, photoelasticity methods, and the finite element method (FEM). When it comes to studying the biomechanical and biological aspects of orthodontic tooth movement, finite element analysis is an excellent tool.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Heights of Power Arm for Controlled Anterior Teeth Movement in Sliding Mechanics: A 3D FEM Study

George¹,

Reddy²,

KV³

et al. 2022

Cureus

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Introduction: The effectiveness of orthodontic treatment depends on precise control of the anterior teeth during retraction in sliding mechanics. That is why researchers were interested in finding the appropriate loading conditions for sliding mechanics to govern anterior teeth's movement, such as the height of retraction force application and its location on the arch wire. Methods: A FEM study was conducted to evaluate the type of movement of anterior teeth during en-masse retraction by applying 200 gms of force to each side of the maxillary arch with power arms set at various levels (4 mm, 6 mm, 8 mm) mesial to canine from mini-screw placed at a height of 8 mm between maxillary first molar and second premolar. A 3D model (FEM) of the maxillary arch was constructed to study the amount of labio-lingual tipping and bodily displacement of maxillary central incisor achieved. Results: When a 200-gm power was applied to the power arm, controlled lingual crown tipping was seen at the levels of 4 mm and 6 mm, in contrast to the level of 8 mm, where bodily displacement occurred, according to this evaluation. Conclusion: In sliding mechanics, the height of the power arm plays an important role in obtaining controlled lingual crown tipping or bodily displacement during retraction of anterior teeth.

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Measurement of inter radicular bone width in different growth patterns for determining safe zone for placement of miniscrew implants – A cone beam computed tomography study

Sarje¹,

Despande²,

Ashtekar³

et al. 2021

IJODR

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To measure the inter-radicular spaces in both arches for miniscrew implant placement and to determine the most reliable sites using CBCT. A CBCT radiograph was taken for 75 subjects that met with inclusion criteria. They were divided into 3 categories- Hypodivergent, average, and hyperdivergent group. Images were calibrated by using software and printed as a film. Interradicular space on the right side of the jaw was measured in the sagittal plane after assuming the jaw to be symmetrical. Bucco-lingual and mesiodistal width were measured up to desired bone levels. In vertical growth pattern, in posterior maxilla highest mesiodistal width between 2nd premolar and 1st molar at 7mm. In the mandible, it was between the 1st and 2nd molar at 11mm. In horizontal growth pattern, in posterior maxilla highest mesiodistal width between 1st and 2nd premolar, and mandible it was between 1st and 2nd molar at 11mm. In average growth pattern, in posterior maxilla highest mesiodistal width between 2nd premolar and 1st molar and 1st molar at 7mm. In the mandible, it was between the 1st and 2nd molar at 11mm. The importance of the relationship between the growth pattern and the availability of inter radicular space may aid the clinician in planning appropriate surgical sites for miniscrew implant placement.

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Stress Distribution and Displacement of Maxillary Anterior Teeth During En-masse Intrusion and Retraction: A FEM Study

Cited by 5 publications

References 0 publications

DEEP BITE CORRECTION BY INCISORS INTRUSION WITH CONNECTICUT INTRUSION ARCH - case report

DEEP BITE CORRECTION BY INCISORS INTRUSION WITH CONNECTICUT INTRUSION ARCH - case report

The Influence of Heights of Power Arm for Controlled Anterior Teeth Movement in Sliding Mechanics: A 3D FEM Study

Measurement of inter radicular bone width in different growth patterns for determining safe zone for placement of miniscrew implants – A cone beam computed tomography study

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