Histomorphometric analysis of overloading on palatal tooth movement into the maxillary sinus

Maeda, Yuichi; Kuroda, Shingo; Ganzorig, Khaliunaa; Wazen, Rima; Nanci, Antonio; Tanaka, Eiji

doi:10.1016/j.ajodo.2015.04.032

Cited by 20 publications

(15 citation statements)

References 28 publications

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“…It is known that biomechanical models of the human TMJ are not perfect, rather they are based on a number of assumptions and simplifications. More specifically, biomechanical model could not mimic the influence of different cytokines such as IL-4, IL-6, and IL-12 [33][34][35]. In future studies, we aim to determine the nutrient environment in TMJ discs by using combined experimental and computational modelling approaches.…”

Section: Discussionmentioning

confidence: 99%

Finite elements analysis of the temporomandibular joint disc in patients with intra-articular disorders

et al. 2020

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Background: Intra-articular disorders (ID) or anterior and/or medial displacement of the temporomandibular joint disorder (TMJ) disc are the most common form of TMJ dysfunction (TMD). TMD causes changes in the friction coefficient during TMJ movement. Herein, we provided a three-dimensional (3D) finite-elements model (FEM) including the maxilla, disc, and mandible and evaluated the stress distribution with different friction coefficient. Methods: Fourteen volunteers without TMD and 20 patients with MRI-diagnosed TMD were selected. CT and MRI data were collected to build the 3D FEA model of the mandible and TMJ disc. Stress distribution with different friction coefficient was measured. Result: In the normal model, stress distribution on the TMJ disc was 2.07 ± 0.17, 1.49 ± 0.14, and 1.41 ± 0.14 MPa with 0.001, 0.3, and 0.4 friction coefficient, respectively. In the TMD model, stress distribution was 3.87 ± 0.15, 7.23 ± 0.22, and 7.77 ± 0.19 MPa respectively. Conclusion: When the friction coefficient of the side with anterior displacement increased, stress on the disc, condyle and mandible of the opposite side increased. Simultaneously, stress values of the disc, condyle and mandible were higher than those of the normal lateral joint.

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Section: Discussionmentioning

confidence: 99%

Finite elements analysis of the temporomandibular joint disc in patients with intra-articular disorders

et al. 2020

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“…Though several case reports [26][27][28] and experimental studies [29][30][31] demonstrated that teeth can be safely moved through the MS with continuous light force and appropriate orthodontic appliances, care should be taken when devising a treatment plan for adolescent patients with Class II discrepancy and the long faces, especially for those with hard orthodontic tooth movement (bodily movement or intrusion) through the sinus.…”

Section: Discussionmentioning

confidence: 99%

Correlation Between the Extension of the Maxillary Sinus Floor and Malocclusion in Adolescent Patients Using a Cone-Beam Computed Tomography

zhang

et al. 2020

Preprint

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Background: The correlation between extension of the maxillary sinus floor and vertical facial skeletal patterns is important for designing orthodontic treatment plans. We correlated the extension of the maxillary sinus (MS) floor with different facial skeletal malocclusion in adolescent patients aged 10-19 years old using a cone-beam computed tomography. Methods: The relationship between the root tips of upper posterior teeth and the sinus floor was typed and scored (0-4) using cone-beam computed tomography (CBCT) images. Scores of each tooth and each patient were formulated.The cephalometric radiographs were analyzed with Dolphin software to diagnose patients' facial skeletal types into three groups according to Frankfort mandibular plane angle (FMA) as high-angle, average-angle and low-angle groups and ANB angle as Class I, Class II and Class III groups separately. The influences caused by age, sex, and facial skeletal malocclusion on the tooth and patient score were analyzed. Results: In high-angle group, the first molar (FM) score was significantly higher than that in the average-angle and low-angle groups (P = 0.018). Age has a positive effect on the patient score and some of the tooth scores, such as the second premolar (SPM) score, FM score, and the second molar (SM) score, and in the skeletal facial malocclusion. With increasing age, SM score increased along with the Frankfort mandibular plane angle (FMA). No significant difference was found in the distribution of patient and tooth scores by ANB angles. Conclusion: The relationship between the maxillary posterior roots and the sinus floor is correlated with facial skeletal malocclusion in 10- to 19-year-old adolescents. More first molar root tips were inside the sinus in the high-angle group compared with the average-angle and low-angle skeletal patterns. With advancing age, more second molar root tips were more close to contact the sinus floor in the high-angle group. Consideration of the root-sinus position in the posterior maxillary area before establishing an orthodontic treatment plan is recommended.

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“…When the roots contact or penetrate the maxillary sinus, they may interfere with orthodontic movement . Daimaruya et al showed that the alveolar bone around the root apices was remodelled when the maxillary premolars were intruded.…”

Section: Discussionmentioning

confidence: 99%

“…Daimaruya et al showed that the alveolar bone around the root apices was remodelled when the maxillary premolars were intruded. Nevertheless, external apical root resorption without the formation of reparative cementum was observed . Furthermore, Wehrbein et al demonstrated that the intrusion of teeth could initiate defects in the overlying bone.…”

Section: Discussionmentioning

confidence: 99%

“…When planning the orthodontic intrusion of the posterior teeth, it is important to understand the anatomical relationship between the maxillary sinus floor (MSF) and the maxillary posterior teeth (MPT), because a close distance between the two may cause root resorption or slow tooth movement in the orthodontic intrusion . The maxillary sinus is small at birth and progressively grows reaching the maximum size during 20s, although varying with age and sex …”

Section: Introductionmentioning

confidence: 99%

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Anatomical relationship between the maxillary posterior teeth and the sinus floor according to an anterior overbite

Son

Kim

et al. 2019

Orthod Craniofacial Res

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Objective To evaluate the vertical relationship between the maxillary sinus floor (MSF) and the maxillary posterior teeth (MPT) according to an anterior overbite. Settings and Sample Population The patients were divided into three groups according to an anterior overbite. The open bite group (OBG) included patients with an anterior overbite of ≤0 mm, the normal overbite group (NBG) included patients with an overbite of 0‐3 mm, and the deep bite group (DBG) included patients with an overbite ≥3 mm. Thirty patients were randomly matched into each group based on age and sex. Materials and Methods The distances and vertical relationship between the MSF and the MPT was analysed using cone‐beam computer tomography. The vertical relationship between the two was classified as either favourable or unfavourable for the intrusion of the posterior teeth. Results A higher ratio of patients in the OBG had MPT positioned close to the MSF than the DBG. Intrusion of the posterior teeth was unfavourable for an average of 87.2%, 77.2% and 70.2% molars in the OBG, NBG and DBG, respectively. Conclusions The vertical distance between the MSF and the MPT is associated with an anterior overbite. The posterior teeth were in an unfavourable position for the orthodontic intrusion in the OBG as compared to the other groups. Additional caution is needed when planning orthodontic intrusion treatment for patients with an anterior open bite. But, there were some individual variations within each group.

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Histomorphometric analysis of overloading on palatal tooth movement into the maxillary sinus

Cited by 20 publications

References 28 publications

Finite elements analysis of the temporomandibular joint disc in patients with intra-articular disorders

Finite elements analysis of the temporomandibular joint disc in patients with intra-articular disorders

Correlation Between the Extension of the Maxillary Sinus Floor and Malocclusion in Adolescent Patients Using a Cone-Beam Computed Tomography

Anatomical relationship between the maxillary posterior teeth and the sinus floor according to an anterior overbite

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