School of Dentistry, College of Medicine, National Taiwan University, Taipei, Taiwan; Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan.
Department of Dentistry, Chi-Mei Medical Center, Tainan, Taiwan.
J Formos Med Assoc. 2022 Jan;121(1 Pt 2):247-257. doi: 10.1016/j.jfma.2021.03.020. Epub 2021 Apr 12.
BACKGROUND/PURPOSE: The unpredictable condition of cracked teeth warrants further investigation and clinical experiences. The purpose of this study was to collect and record data on demographics, clinical characteristics, different treatment modalities and survival of cracked teeth at 6-month, 1-year and 2-year recalls.
77 cracked teeth from 65 patients were included. Data on demographics, clinical parameters, treatment modalities and recall were collected. Binomial, multinomial and chi square tests were used for statistical analysis.
Most cracked teeth occurred in patients greater than 40 years old (p < 0.01). Cracked teeth themselves were most often molars (79.22%; p < 0.01), a non-terminal tooth in the arch (62.34%; p < 0.05) and nonendodontically-treated teeth (94.81%; p < 0.01). Cracked teeth exhibited pain to percussion (63.64%, p < 0.05) or biting (74.03%; p < 0.01), and no or only positive mobility (76.62%; p < 0.01). Cracks were most often oriented in the mesiodistal direction (68.83%; p < 0.01). Higher survival rates were noted in cracked teeth lacking pre-operative pain to palpation or spontaneous pain, and with no or only positive mobility at 6-month and 1-year recalls. In vital cracked teeth, higher survival rates were noted in teeth lacking pre-operative pain to palpation and with no or only positive mobility at 2-year recalls.
The absence of pre-operative palpation discomfort, spontaneous pain and minimal mobility, as well as the presence of pulp vitality were associated with higher survival rates of cracked teeth at all recall times. Results are useful for diagnosis and outcomes-based treatment planning of cracked teeth.
背景/目的：牙齿劈裂的情况难以预测，因此需要进一步的研究和临床经验。本研究的目的是收集和记录有关人口统计学、临床特征、不同治疗方式以及在 6 个月、1 年和 2 年随访时劈裂牙的存活率的数据。
纳入 65 例患者的 77 颗劈裂牙。收集了人口统计学、临床参数、治疗方式和随访数据。使用二项式、多项式和卡方检验进行统计分析。
大多数劈裂牙发生在年龄大于 40 岁的患者中（p<0.01）。劈裂牙本身最常见于磨牙（79.22%；p<0.01）、牙弓中的非末端牙（62.34%；p<0.05）和未经根管治疗的牙齿（94.81%；p<0.01）。劈裂牙表现为叩诊痛（63.64%，p<0.05）或咬合痛（74.03%；p<0.01），且无或仅有轻度动度（76.62%；p<0.01）。裂缝最常呈近远中向（68.83%；p<0.01）。在 6 个月和 1 年随访时，无术前触诊或自发性疼痛且无或仅有轻度动度的劈裂牙存活率较高。在有活力的劈裂牙中，在 2 年随访时无术前触诊不适且无或仅有轻度动度的牙存活率较高。
在所有随访时间中，无术前触诊不适、自发性疼痛和最小动度以及牙髓活力存在与劈裂牙的高存活率相关。这些结果有助于诊断和基于结果的劈裂牙治疗计划。
