INTRODUCTION The aims of this study were to examine whether teeth adjacent and contralateral to endodontically diseased teeth showed co-occurring mechanical allodynia and to determine whether demographic and clinical variables were involved in such associations. METHODS Patients with irreversibly inflamed or necrotic permanent first molars or second premolars were examined. From the 348 eligible patients (160 men and 188 women; mean age ± standard deviation = 30.4 ± 10.0 years), data on age, sex, health status, current presence of pain, tooth type, dental arc, and pulpal diagnosis were collected. Percussion testing was applied to all posterior teeth, and the degrees of pain were recorded using a 4-point verbal scale as follows: none to slight (coded as 0) and moderate to severe (coded as 1). Following association rule mining (with minimum support and confidence levels of 0.1), univariate and multiple logistic regression analyses were performed at various stringency levels (α = 0.05). RESULTS The number of painful associations was greater ipsilaterally than contralaterally and distally than mesially and increased with the severity of percussion pain in the diseased tooth. Successful regression models were established for the ipsilateral (between the diseased tooth and adjacent teeth; current pain: odds ratio = 3.37; 95% confidence interval, 1.94-5.83) and contralateral (between the diseased tooth and the tooth distal to the contralateral symmetrical tooth; dental arc: odds ratio = 2.40; 95% confidence interval, 1.21-4.76) sides (P < .05). CONCLUSIONS Healthy teeth adjacent and contralateral to symptomatic diseased teeth exhibited percussion sensitivity. Patients' current pain and dental arc, respectively, were involved in such painful associations.

中文翻译：

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机械性异常性疼痛在与牙本质病牙齿相邻和对侧的健康牙齿中的临床研究。

引言这项研究的目的是检查与牙髓疾病牙齿相邻和对侧的牙齿是否同时出现机械性异常性疼痛，并确定人口统计学和临床​​变量是否与这种关联有关。方法检查患有不可逆性发炎或坏死的永久性第一磨牙或第二磨牙的患者。从348名合格患者（160名男性和188名女性；平均年龄±标准差= 30.4±10.0岁）中，收集了有关年龄，性别，健康状况，当前疼痛，牙齿类型，牙齿弧度和牙髓诊断的数据。对所有后牙进行撞击测试，并使用以下4点语言等级记录疼痛程度：从无到轻（编码为0）和从中到重（编码为1）。在进行关联规则挖掘（最小支持度和置信度为0.1）之后，在各种严格度水平（α= 0.05）下进行了单变量和多重逻辑回归分析。结果患病牙齿的疼痛同伴数量多于对侧和远端，远中比同伴多，并且随着患病牙齿的敲击疼痛的加剧而增加。建立了同侧（患病牙齿与相邻牙齿之间；当前疼痛：优势比= 3.37； 95％置信区间为1.94-5.83）和对侧（患病牙齿与对侧对称牙齿远端的牙齿之间）成功的回归模型；牙齿弧：优势比= 2.40； 95％置信区间，1.21-4.76）侧（P <.05）。结论有症状患牙附近和对侧的健康牙齿表现出敲击敏感性。患者当前的疼痛和牙弓分别与这种疼痛相关。