Splint stiffness and extension effects on a simulated avulsed permanent incisor—A patient‐specific finite element analysis

Vilela, Andomar Bruno Fernandes; Soares, Priscilla Barbosa Ferreira; Beaini, Thiago Leite; Versluis, Antheunis; Soares, Carlos José

doi:10.1111/edt.12705

Cited by 10 publications

(20 citation statements)

References 35 publications

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“…Most RBCs can be distinctly identified from dental hard tissues under light at wavelengths around 405 ± 10 nm. 10,21 By F I G U R E 6 Periapical radiographs generated 5 years and 9 months postaccident, displaying tooth 12 (A), teeth 21 and 22 (B), as well as tooth 42 (C). Signs of continued ERR were apparent in all replanted teeth, with tooth 42 manifesting the most advanced ERR.…”

Section: Discussionmentioning

confidence: 99%

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Endodontic and restorative management of an adult with avulsion of multiple teeth: A case report with 5 years and 9 months of follow‐up

Eggmann,

Filippi,

Mukaddam

2023

Dental Traumatology

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Simultaneous avulsion of four or more teeth is a rare event. This case report examines the dental care given to an adult who, during a bicycle accident, experienced the avulsion of a mandibular incisor as well as all of his maxillary incisors. In the immediate aftermath of the accident, four out of the five incisors were located, promptly collected, and stored in a tooth rescue box, all within a 20‐min window. Replantation and splinting were performed on the day of the accident. Endodontic treatment involved sequential intracanal dressing with an antibiotic–corticosteroid paste followed by calcium hydroxide prior to root canal obturation. 3 months post‐accident, signs of external replacement resorption (ERR) began to appear in all the replanted teeth. The gap created by the missing maxillary central incisor was managed with a three‐unit fixed dental prosthesis, despite the onset of ERR in the incisors used as abutment teeth. Regular follow‐ups showed a relatively slow ERR progression rate over a span of nearly 6 years. The patient expressed satisfaction with both the esthetic and functional outcomes. This case, marked by multiple avulsions, underscores the importance of immediate and appropriate intervention alongside the imperative for carefully considered long‐term management strategies. Given the decelerated bone remodeling rate in adults, ERR generally progresses at a slower pace than in children. Accordingly, this case demonstrates the viability of retaining replanted teeth over the long term, even when these teeth have been subjected to nonphysiological storage for extended durations, a factor known to impede periodontal healing.

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Section: Discussionmentioning

confidence: 99%

“…During a bicycle accident on a single-track trail at age 35, the male patient sustained severe dentoalveolar injuries, including avulsion of teeth 12,11,21,22, and 42, a lacerated lower lip, and minor skin abrasions. Signs or symptoms of traumatic brain injury were not present at any time.…”

Section: A S E Rep Ortmentioning

confidence: 99%

Endodontic and restorative management of an adult with avulsion of multiple teeth: A case report with 5 years and 9 months of follow‐up

Eggmann,

Filippi,

Mukaddam

2023

Dental Traumatology

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“…In this study, a certain distributed point on the occlusal surface of each tooth was selected for concentrate loading [ 17 ], and the chewing cycle was simplified to vertical loading and oblique loading. Under loading conditions, the edge of the mandible was fixed to prevent the jaw from displacement in the X, Y and Z directions [ 13 , 15 ] (Fig. 3 ).…”

Section: Methodsmentioning

confidence: 99%

“…All materials were considered linear-elastic, isotropic and homogeneous [10][11][12][13][14][15][16]. The applied material properties (elastic modulus and Poisson's ratio) were obtained from the literature (Table 2).…”

Section: Experimental Preset Conditionsmentioning

confidence: 99%

Timing selection for loosened tooth fixation based on degree of alveolar bone resorption: a finite element analysis

Hao

et al. 2022

BMC Oral Health

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Objective This study aimed to evaluate timing of fixation to retard bone absorption using finite element analysis(FEA). Methods Volunteer CT images were used to construct four models of mandibles with varying degrees of alveolar bone resorption. By simulating occlusal force loading, biomechanical analysis was made on the periodontal membrane, tooth root and surrounding bone (both cancellous and cortical) of mandibular dentition. Results The von Mises stress value of the periodontal structures was positively related with the degree of alveolar bone resorption, and the von Mises stress at the interface between the periodontal membrane and tooth root was increased significantly in moderate to severe periodontitis models. The von Mises stress at the interface between the periodontal cortical bone and cancellous bone was increased significantly in the severe periodontitis model. And the von Mises stress value with oblique loading showed significantly higher than vertical loading. Conclusion Teeth with moderate to severe periodontitis, loosened tooth fixation can be used to retard bone absorption.

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“…It has nothing to do with the length or con guration design of the arch wire. It represents the bending rigidity of the arch wire, and its size depends on the material properties of the bow wire (such as elastic modulus) and cross section properties (such as the distance of inertia).Orthodontists can change the stiffness of the whole or local orthodontic appliance by selecting different materials of the arch wire, different cross section sizes, and designing different span of the arch wire and the con guration of the bend, to achieve accurate control of the orthodontic force [11][12][13]. To achieve good control of maxillary anterior teeth torque angle during the correction process, we proposed a new type of torque auxiliary bow device: self-made four-curvature auxiliary arch, which is used in the early stage of treatment (Patent No: ZL 201420113873.9) [14].…”

Section: Introductionmentioning

confidence: 99%

Efficacy of a four-curve auxiliary arch at preventing maxillary central incisor linguoclination during orthodontic treatment: A finite element analysis

Yang

Bai

Zhang

et al. 2022

Preprint

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Background The correct torque of the incisors helps assess the effect of orthodontic treatment; however, evaluating it effectively remains a challenge. Improper anterior teeth torque angle can cause cortical bone fracture and root exposure. Methods A three-dimensional finite element model of the maxillary central incisor torque controlled by a self-made four-curvature auxiliary arch was established, And the experiments were divided to simulate four different group: (1) molar ligation group ; (2) micro-implant ligation group; (3) molar retraction group ༛(4) micro-implant retraction group༛and the retracted traction force was set at 1.15 N. The displacement of the maxillary dentition and periodontal ligament stress values were analyzed with different torque forces (0.5 N, 1 N, 1.5 N, 2 N) placed on the incisors. Results Provided the absence of a tooth extraction gap, when the four-curvature auxiliary arch was used in conjunction with absolute anchorage, the recommended force value was of < 1.5 N. when maxillary central incisor retraction, a force value of < 1 N was recommended. In the case of no-implant anchorage, whether there is tooth extraction gap or not, the recommended force value was of < 1 N. The stress on the other teeth did not exceed the value of that on the periodontal ligament. The effect of using the four-curvature on the incisors was significant. Conclusions The proposed approach may help improve treatment maxillary central incisor for poor torque and avoid cortical bone fracture and root exposure

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Splint stiffness and extension effects on a simulated avulsed permanent incisor—A patient‐specific finite element analysis

Cited by 10 publications

References 35 publications

Endodontic and restorative management of an adult with avulsion of multiple teeth: A case report with 5 years and 9 months of follow‐up

Endodontic and restorative management of an adult with avulsion of multiple teeth: A case report with 5 years and 9 months of follow‐up

Timing selection for loosened tooth fixation based on degree of alveolar bone resorption: a finite element analysis

Efficacy of a four-curve auxiliary arch at preventing maxillary central incisor linguoclination during orthodontic treatment: A finite element analysis

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