Functional treatment of bilateral posterior crossbite improves mandibular kinematics during chewing

IF 4.6 Q2 MATERIALS SCIENCE, BIOMATERIALS

ACS Applied Bio Materials Pub Date : 2024-02-26 DOI:10.1111/ocr.12769

Maria Grazia Piancino, Teresa Vallelonga, Corrado De Biase, Laura Di Benedetto, Vito Crincoli, Alessandro Tortarolo

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引用次数: 0

Abstract

Objectives

To evaluate the effects of treatment of bilateral posterior crossbite (BPXB) on mandibular kinematics by the percentage of reverse chewing cycles (RCCs) during soft and hard bolus chewing before and after the correction of the malocclusion with function-generating bite (FGB).

Materials and Methods

This prospective study included 71 subjects: 19 patients with occlusally symmetric BPXB (M = 9; F = 10; mean age 9.3 ± 2.2[yr.mo]), 32 patients with occlusally asymmetric BPXB (19 with more teeth in crossbite on the right side (right prevalent side), M = 7; F = 12; mean age 8.2 ± 1.6 [yr.mo] and 13 on the left side, M = 7; F = 6; mean age 9.6 ± 1.9 [yr.mo]) and 20 controls without malocclusion (M = 8; F = 12; mean age 10.2 ± 1.7 [yr.mo]). Masticatory patterns were recorded before (T0) and after (T1) the correction of the malocclusion with FGB, with the K7-I® kinesiograph using standardized soft and hard boluses.

Results

BPXB was corrected in all included patients. At T0, the percentage of RCCs in BPXB was significantly increased compared to controls (P < .0001); symmetric BPXB showed no difference in RCCs between the sides, whereas asymmetric BPXB showed significantly more RCCs on the side with more teeth in crossbite (prevalent side). After treatment with FGB (T1), the percentage of RCCs was significantly reduced in both symmetric BPXB patients (soft bolus, P = .003; hard bolus, P < .001) and asymmetric BPXB patients (prevalent side: soft and hard bolus, P < .00001; non-prevalent side: soft bolus, P = .01 and hard bolus, P = .0002).

Conclusion

Functional correction of BPXB with FGB significantly improved mandibular kinematics during chewing.

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双侧后交叉咬合的功能性治疗可改善咀嚼时的下颌骨运动学。

目的评估双侧后交叉咬合（BPXB）治疗对下颌骨运动学的影响，方法是在使用功能生成咬合（FGB）矫正错颌畸形前后，通过软咀嚼和硬咀嚼时反向咀嚼周期（RCC）的百分比来进行评估：这项前瞻性研究包括 71 名受试者：19 名咬合对称的 BPXB 患者（男 = 9；女 = 10；平均年龄为 9.3 ± 2.2[岁.月]），32 名咬合不对称的 BPXB 患者（19 名右侧牙齿交叉咬合较多（右盛行侧），男 = 7；女 = 12；平均年龄为 8.2±1.6[年.月]，左侧13颗，男=7；女=6；平均年龄9.6±1.9[年.月]）和20名无错位的对照组患者（男=8；女=12；平均年龄10.2±1.7[年.月]）。在使用 FGB 矫正错合畸形之前（T0）和之后（T1），使用 K7-I® 肌动仪记录咀嚼模式，并使用标准化的软栓和硬栓：所有患者的 BPXB 都得到了矫正。在 T0 期，BPXB 中的 RCC 百分比与对照组相比显著增加（P使用 FGB 对 BPXB 进行功能性矫正可明显改善咀嚼时的下颌骨运动学特性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ACS Applied Bio Materials Chemistry-Chemistry (all)

CiteScore

9.40

自引率

2.10%

发文量

464