Closing a Large Maxillary Median Diastema using Bapat Power Arm

Bapat, Shirish M; Singh, Chanchal; Bandejiya, Prashant

doi:10.5005/jp-journals-10005-1435

Cited by 3 publications

(2 citation statements)

References 11 publications

(12 reference statements)

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“…An article from 1986 describes their employment to advantage in the old orthodontic Begg technique, supporting the extraction space closure from behind [18]. For the last two decades, power-arms have been frequently used as prefabricated, mostly metallic, orthodontic features, [19,20]. The clinical experience (Figure 3A,B) of our orthodontist with metallic hand-crafted and prefabricated power-arms (Figure 1) references the following frequent impediments:…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Modeling and 3D Printing of Biocompatible Orthodontic Power-Arm Design with Clinical Application

Thurzo

Kočiš²,

Novák

et al. 2021

Applied Sciences

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Three-dimensional (3D) printing with biocompatible resins offers new competition to its opposition—subtractive manufacturing, which currently dominates in dentistry. Removing dental material layer-by-layer with lathes, mills or grinders faces its limits when it comes to the fabrication of detailed complex structures. The aim of this original research was to design, materialize and clinically evaluate a functional and resilient shape of the orthodontic power-arm by means of biocompatible 3D printing. To improve power-arm resiliency, we have employed finite element modelling and analyzed stress distribution to improve the original design of the power-arm. After 3D printing, we have also evaluated both designs clinically. This multidisciplinary approach is described in this paper as a feasible workflow that might inspire application other individualized biomechanical appliances in orthodontics. The design is a biocompatible power-arm, a miniature device bonded to a tooth surface, translating significant bio-mechanical force vectors to move a tooth in the bone. Its design must be also resilient and fully individualized to patient oral anatomy. Clinical evaluation of the debonding rate in 50 randomized clinical applications for each power-arm-variant showed significantly less debonding incidents in the improved power-arm design (two failures = 4%) than in the original variant (nine failures = 18%).

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Section: Introductionmentioning

confidence: 99%

Three-Dimensional Modeling and 3D Printing of Biocompatible Orthodontic Power-Arm Design with Clinical Application

Thurzo

Kočiš²,

Novák

et al. 2021

Applied Sciences

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“…Diastemata are spaces between the teeth, which can be of various sizes and between any teeth. They can occur for several reasons, including normal physiological events, genetic and racial predisposition, growth failure, tooth size discrepancies, inadequate dental angulations, pathologic conditions, and even iatrogenic results of orthodontic procedures, such as rapid expansion [5,6]. When reaching anterior teeth, they are usually noticed by patients because they are in an aesthetical region.…”

Section: Introductionmentioning

confidence: 99%

Minimally invasive approach to diastema closure using lithium disilicate porcelain veneers: clinical report

Buzetto

Pedreira

Damasceno

et al. 2018

BDS

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Numerous advances in dentistry techniques and material have allowed patients to have not only a functional but also an aesthetic smile in a conservative way. This case report describes a treatment with ceramic laminates to solve the aesthetic problems of an 18-year-old male dissatisfied with his smile. Following the correct protocols, using minimally invasive abrasions, ceramic laminates, and strong adhesion between porcelain and dental enamel can provide predictable results and clinical longevity through follow-up.KeywordsDental veneers; Ceramic; Dental materials.

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Stress Analysis of Ceramic Laminate Veneer for Diastema Closure with Different Extensions and Different Directions of Applied Load

Badawy¹,

Aziz²

2018

IJDSR

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To analyze stress distribution on the IPS e. max (lithium di silicate) laminate veneer used for diastema closure with different free median extensions and different extensions of proximal preparation using two directions of applied force. Statement of the problem: Closure of large median diastema by laminate veneer will increase stress intensity on the unsupported mesial extension. Materials and Methods: Finite element model of unprepared maxillary central incisor was made, by deletion method, the labial surface was reduced by 0.5 mm. and is taken up to the height of the incisal edge (feather design), then, the basic geometric configurations of different laminate veneer designs and its dimensions in millimeters were introduced into the ANSYS software program to obtain the different nine models from three proximal extensions (1, 1.5 and 2 mm) and three unsupported median extensions (0.5, 1 and 1.5 mm), then the stress distributions were evaluated by applying load of 100 N at two angulations(60° and 125°). Results: In case of 60° applied load the highest stress value was recorded in Model 3 (veneer with 1 mm labiopalatal extension with 1.5 free median extension, 30.95 Mpa) where The lowest stress value was recorded in Model 7 (veneer with 2 mm labiopalatal extension with 0.5 free median extension, 20.15 Mpa). Statistically, there was a significant difference between tested models (P at the level 0.05) except in cases of model 1, 4 and 7 which exhibited no statistical significant difference (P > 0.05). In case of 125° applied load the highest stress value was recorded in Model 3 (veneer with 1 mm labiopalatal extension with 1.5 free median extension, 53.61 Mpa) where The lowest stress value was recorded in Model 7 (veneer with 2 mm labiopalatal extension with 0.5 free median extension, 39.27 Mpa). Statistically, there was a significant difference between tested models (P at the level 0.05) except in cases of model 4, 5 and 8 which exhibited no statistical significant difference (P > 0.05). Conclusion: Stress is concentrated on the free median extension, incisal edge, and the mesio-labioincisal point angle. The stress intensity increase in the following cases:-(1) increase in free median extension of the veneer, (2) increase in angulation of applied force, (3) decrease in proximal extension of laminate veneer.

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Closing a Large Maxillary Median Diastema using Bapat Power Arm

Cited by 3 publications

References 11 publications

Three-Dimensional Modeling and 3D Printing of Biocompatible Orthodontic Power-Arm Design with Clinical Application

Three-Dimensional Modeling and 3D Printing of Biocompatible Orthodontic Power-Arm Design with Clinical Application

Minimally invasive approach to diastema closure using lithium disilicate porcelain veneers: clinical report

Stress Analysis of Ceramic Laminate Veneer for Diastema Closure with Different Extensions and Different Directions of Applied Load

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