����ؽڼ��������ʹ������

疼痛治疗分为药物治疗和非药物治疗。药物治疗包括非甾体类抗炎药、阿司匹林和扑热息痛等非阿片类镇痛药、阿片类镇痛药、"辅助"药物如抗抑郁药阿米替林和抗惊厥药卡马西平等。非药物治疗包括神经刺激疗法、神经阻滞疗法、外科手术、物理治疗、心理-行为疗法等。本文介绍我们临床上常见的颞下颌关节骨关节炎、肌筋膜疼痛、神经病理性疼痛(非典型牙痛、治疗后神经痛、三叉神经痛)及复合性局部疼痛综合征的主要临床用药和理论基础,如非甾体类抗炎药特异性COX-2抑制剂、改善骨关节炎症状和关节结构的药物硫酸氨基葡萄糖、阿片类药物曲马多、三环类抗抑郁药阿米替林、新一代抗惊厥药加巴喷丁等。     

The impact of the COVID-19 pandemic on orofacial pain practice: Perceptions from a convenience sample of orofacial pain practitioners

BackgroundCOVID-19 has had a substantial impact on people’s lives. Increasing evidence indicates that patients with chronic pain particularly are being affected; however, few articles have examined how the pandemic has affected the care or clinical presentation of patients with orofacial pain. The aim of this study was to describe COVID-19–related changes in referral patterns and numbers, in patient demographics, in patients’ seeking treatment for problems, and in administrative procedures in 3 orofacial pain clinical settings.MethodsPractitioners participating in the American Academy of Orofacial Pain webinar titled “Practicing Orofacial Pain, Headache, and Sleep Care During the COVID-19 Pandemic” completed a voluntary anonymous online survey. Survey respondents completed general questions related to their orofacial pain practices and about perceptions of their patients’ symptoms. For statistical analysis, the authors calculated frequencies and used analysis of variance for continuous variables or Likert scale variables and the χ² test for dichotomous or categorical variables. Statistical significance was set at P value of .05 or below.ResultsPractitioners noted an increase in new patients with orofacial pain. Of the participants, 33% indicated the onset of their patients’ pain was often or extremely often related to COVID-19. The 5 most common symptoms that providers felt were aggravated in their patients were masticatory muscle myalgia, anxiety, tension-type headache, bruxism, and insomnia or fragmented sleep.ConclusionThe COVID-19 pandemic has resulted in a marked increase in the number of patients seeking consultation for orofacial pain and associated symptoms.Practical ImplicationsBecause of the COVID-19 pandemic, orofacial pain practitioners have noticed an increase in orofacial pain symptoms across practice settings.     

咬合板对颞下颌关节紊乱病相关颌面部疼痛的影响

颞下颌关节紊乱病（temporomandibular disorders, TMD）是口颌面部慢性痛的主要来源,严重干扰日常活动。咬合板是颞下颌关节紊乱病的最常用的治疗方法之一,但其疗效尚未完全明了。学者们多年来致力于对咬合板的作用机制、疗效的研究,但至今尚未得出统一的结果。该文将对咬合板的作用机制、咬合板的分类、TMD相关疼痛的种类与咬合板的选择、TMD的其他保守治疗与咬合板的关系四个方面对于咬合板治疗颞下颌关节紊乱病相关颌面部疼痛的疗效进行进行综述。     

调(牙合)对TMD慢性疼痛治疗效果的临床评价初探

目的：探讨调[牙合]治疗颞下颌关节紊乱病（TMD）慢性疼痛的疗效。方法：TMD伴慢性口颌面痛患者21例,盲法随机分为治疗组（10例）和对照组（11例）,治疗组予以本课题组所报道的方法进行调[牙合]治疗,以建立平稳咬合接触为目标,对照组作模拟调[牙合]。检测治疗前、治疗后即刻和治疗1月时疼痛指数（VAS）、开口度及咬合力水平。结果：治疗组VAS降低（p=0．000）,开口度增加（p=0．008）,咬合力有所增加（p=0．050）,与对照组相差显著。对照组治疗前后无明显差异。结论：以建立自然牙列稳定咬合接触关系为目的的调[牙合]治疗可以明显缓解TMD慢性疼痛。     

Association of depressiveness with chronic facial pain: A longitudinal study

Abstract

Objective. Depression and pain are often co-morbid. Temporomandibular disorders (TMD) include facial pain as one main symptom. Reports are lacking on the association between chronic facial pain and earlier depressiveness. The aim of the study was to investigate whether depressiveness increases the risk for chronic facial pain in a longitudinal population-based study. Materials and methods. Subjects included in the Northern Finland Birth Cohort 1966 (n = 5696) answered a questionnaire on facial pain and depressiveness using the Symptom Checklist-25 depression sub-scale at the age of 31 years. In addition, reported depression diagnosed by a doctor was enquired about. Three years later a sub-sample of the cohort, including 63 cases with chronic facial pain and 85 pain-free controls, was formed based on the question concerning facial pain. Results. Of the chronic facial pain cases 17.5% and of the pain-free controls 7.1% were depressive 3 years earlier at baseline (p = 0.050, χ ² test, crude OR = 2.8, 95% CI = 1.0–8.0). Of the chronic facial pain cases 6.3% and of the pain-free controls 1.2% reported having had diagnosed depression (p = 0.085, crude OR = 5.7, 95% CI = 0.6–52.2). After adjusting the gender, the association between depressiveness reported at the baseline and chronic facial pain was significant (OR = 4.2, 95% CI = 1.1–16.2). When widespread pain was included in the analysis, the association was not significant. Conclusions. Depressiveness increases the risk for chronic facial pain in a 3-year follow-up. This association seems to be mediated through widespread pain.     

Risk factors for temporomandibular joint pain in patients with disc displacement without reduction - a magnetic resonance imaging study

The purpose of this study was to evaluate whether the magnetic resonance (MR) imaging variables of temporomandibular joint (TMJ) internal derangement, osteoarthrosis and/or effusion may predict the presence of pain in patients with a clinical disorder of an internal derangement type (ID)-III. The relationship between TMJ ID-III pain and TMJ internal derangement, osteoarthrosis and effusion was analysed in MR images of 84 TMJs in 42 patients with a clinical unilateral diagnosis of TMJ ID-III pain. Criteria for including a TMJ ID-III pain patient were report of orofacial pain referred to the TMJ, with the presence of unilateral TMJ pain during palpation, function and/or unassisted or assisted mandibular opening. Bilateral sagittal and coronal MR images were obtained to establish the presence or absence of TMJ internal derangement, osteoarthrosis and effusion. Using chi-square analysis for pair-wise comparison, the data showed a significant relationship between the MR imaging findings of TMJ ID-III pain and those of internal derangement (P=0.01) and effusion (P=0.00). Of the MR imaging variables considered simultaneously in the multiple logistic regression analysis, osteoarthrosis (P=0.82) and effusion (P=0.08) dropped out as non-significant in the diagnostic TMJ pain group when compared with the TMJ non-pain group. The odds ratio that a TMJ with an internal derangement type of disk displacement without reduction might belong to the pain group was strong (2.7:1) and highly significant (P=0.00). Significant increases in risk of TMJ pain occurred with 'disk displacement without reduction in combination with osteoarthrosis' (5.2:1) (P=0.00) and/or 'disk displacement without reduction in combination with osteoarthrosis and effusion' (6.6:1) (P=0.00). The results suggest that TMJ pain is related to internal derangement, osteoarthrosis and effusion. However, the data re-emphasize the aspect that these MR imaging variables may not be regarded as the unique and dominant factors in defining TMJ pain instances.     

Pain-related worry in patients with chronic orofacial pain

BackgroundPain-related worry is distinct from, but related to, pain catastrophizing (PC) and anxiety. Worry and its relationship with other variables have been studied in people with chronic pain but not in people with chronic orofacial pain. The authors explored the prevalence of trait, general and pain-related worry and the association of worry with higher pain levels and other variables.MethodsThe authors assessed people who had a diagnosis of chronic orofacial pain by using nonpain-related trait worry, state anxiety, trait anxiety, PC and pain measures. The participants’ answers to an open-ended question about what they were most worried about led to the identification of worry domains, including worry about pain.ResultsThe authors found that worrying about pain was related significantly to worst and least pain levels, pain interference and pain duration, as well as moderated trait worry in predicting pain interference. Although trait worry was not correlated directly with pain, when moderated by PC, it made substantial contributions in predicting pain interference.ConclusionsParticipants with chronic orofacial pain reported experiencing substantial levels of trait worry, anxiety, PC and worry about pain that related to pain ratings directly and indirectly.Practical ImplicationsClinicians should assess pain-related worry in patients with chronic orofacial pain to understand the effects of worry on pain and functioning. Clinicians could treat these patients more effectively by helping them reduce their levels of pain-related worry and focusing on improved coping.     

Persistent orofacial muscle pain: Its synonymous terminology and presentation

Objective: The purpose of the present paper is to describe the presentation of persistent orofacial muscle pain, also commonly referred to as myofascial temporomandibular disorder.

Methods: In this practice survey, the authors reviewed the demographic and clinical features of 34 patients who were evaluated and diagnosed personally.

Results: The majority of the 34 patients were women (82.4%), and their age at consultation averaged 44.6 ± 12.6 (SD) years. The median pain duration was 4.0 years (range: 0.2–34 years). In 97.1% of patients, the pain occurred daily and continuously, and in 51.9% it was unilateral. Chewing or eating made the pain worse in 50% of the patients, and talking in 29.4%. On examination, tightness of the masseter muscle(s) was present in 58.8%, and tenderness in 58.8%.

Conclusions: Persistent orofacial muscle pain mostly affects women, generally occurs daily and continuously, and is equally often unilateral and bilateral. Chewing, eating, and talking are the most common aggravating factors, and tightness or tenderness of the masseter muscle(s) is often found on examination.     

An update of management of insomnia in patients with chronic orofacial pain

In this review, we discuss the management of chronic orofacial pain (COFP) patients with insomnia. Diagnostic work‐up and follow‐up routines of COFP patients should include assessment of sleep problems. Management is based on a multidisciplinary approach, addressing the factors that modulate the pain experience as well as insomnia and including both non‐pharmacological and pharmacological modalities. Parallel to treatment, patients should receive therapy for comorbid medical and psychiatric disorders, and possible substance abuse that may be that may trigger or worsen the COFP and/or their insomnia. Insomnia treatment should begin with non‐pharmacological therapy, to minimize potential side effects, drug interactions, and risk of substance abuse associated with pharmacological therapy. Behavioral therapies for insomnia include the following: sleep hygiene, cognitive behavioral therapy for insomnia, multicomponent behavioral therapy or brief behavioral therapy for insomnia, relaxation strategies, stimulus control, and sleep restriction. Approved U.S. Food and Drug Administration medications to treat insomnia include the following: benzodiazepines (estazolam, flurazepam, temazepam, triazolam, and quazepam), non‐benzodiazepine hypnotics (eszopiclone, zaleplon, zolpidem), the melatonin receptor agonist ramelteon, the antidepressant doxepin, and the orexin receptor antagonist suvorexant. Chronic orofacial pain can greatly improve following treatment of the underlying insomnia, and therefore, re‐evaluation of COFP is advised after 1 month of treatment.     

Management of pain in TMD patients: Bio-oxidative ozone therapy versus occlusal splints

Objective: To compare the effects of bio-oxidative ozone application with occlusal splints in temporomandibular disorder (TMD) patients with pain.

Methods: Forty participants were selected after the diagnosis of TMD and randomly divided into two groups: ozone group (OG, n = 20) and occlusal splint group (OCSG, n = 20). Ozone was applied to patients three times per week, for a total of six sessions. Patients in the OCSG were instructed to use occlusal splints every night over a period of four weeks.

Results: Mandibular movements showed significant differences for the time factor in OG and OCSG. Pressure pain thresholds of the temporal and masseter muscles at follow-up were significantly higher in the OCSG group. Both treatments statistically decreased the visual analog scale (VAS) scores. However, no statistically significant difference was observed between groups after the application of treatments.

Discussion: Occlusal splint treatment is still the gold treatment modality for objective pain relief in patients with TMD pain.     

Psychosocial factors associated with pain outcomes in patients with painful temporomandibular disorders and headaches

The objective of this study was to assess the association between psychosocial factors (in terms of anxiety, somatization, depression, and optimism) and pain (in terms of headache pain intensity and pain-related disability), in patients with a painful temporomandibular disorder (TMD) and one of the following headache types: migraine, tension-type headache (TTH), or headache attributed to TMD, corrected for the influence of bruxism. A retrospective study was conducted at an orofacial pain and dysfunction (OPD) clinic. Inclusion criteria were painful TMD, with migraine, TTH, and/or headache attributed to TMD. Linear regressions were performed to assess the influence of psychosocial variables on pain intensity and on pain-related disability, stratified per headache type. The regression models were corrected for bruxism and the presence of multiple headache types. A total of 323 patients (61% female; mean age 42.9, SD 14.4 years) were included. Headache pain intensity only had significant associations in TMD-pain patients with headache attributed to TMD, and anxiety showed the strongest relation (β = 0.353) with pain intensity. Pain-related disability was most strongly associated with depression in TMD-pain patients with TTH (β = 0.444), and with somatization in patients with headache attributed to TMD (β = 0.399). In conclusion, the influence of psychosocial factors on headache pain intensity and pain-related disability depends on the headache type presenting.     

Chronic orofacial pain

The issues specific to trigeminal pain include the complexity of the region, the problematic impact on daily function and significant psychological impact (J Dent, 43 , 2015, 1203). By nature of the geography of the pain (affecting the face, eyes, scalp, nose, mouth), it may interfere with just about every social function we take for granted and enjoy (J Orofac Pain, 25 , 2011, 333). The trigeminal nerve is the largest sensory nerve in the body, protecting the essential organs that underpin our very existence (brain, eyes, nose, mouth). It is no wonder that pain within the trigeminal system in the face is often overwhelming and inescapable for the affected individual.     

Associations among temporomandibular disorders,chronic neck pain and neck pain disability in computer office workers: a pilot study

Neck pain is the most common musculoskeletal complaint among computer office workers. There are several reports about the coexistence of neck pain and temporomandibular disorders (TMD). However, there are no studies investigating this association in the context of work involving computers. The purpose of this study was to verify the association between TMD and neck pain in computer office workers. Fifty‐two female computer workers who were divided into two groups: (i) those with self‐reported chronic neck pain and disability (WNP) (n = 26) and (ii) those without self‐reported neck pain (WONP) (n = 26), and a control group (CG) consisting of 26 women who did not work with computers participated in this study. Clinical assessments were performed to establish a diagnosis of TMD, and craniocervical mechanical pain was assessed using manual palpation and pressure pain threshold (PPT). The results of this study showed that the WNP group had a higher percentage of participants with TMD than the WONP group (42·30% vs. 23·07%, χ² = 5·70, P = 0·02). PPTs in all cervical sites were significantly lower in the groups WNP and WONP compared to the CG. Regression analysis revealed TMD, neck pain and work‐related factors to be good predictors of disability (R² = 0·93, P < 0·001). These results highlighted the importance of considering the work conditions of patients with TMD, as neck disability in computer workers is explained by the association among neck pain, TMD and unfavourable workplace conditions. Consequently, this study attempted to emphasise the importance of considering work activity for minimising neck pain‐related disability.     

Changes in reported orofacial symptoms over a ten-year period as reflected in two cohorts of fifty-year-old subjects

Objective. The study presents changes in reported orofacial symptoms over the course of a 10-year period. It was hypothesized that there was an increase of temporomandibular disorder (TMD) and orofacial pain symptoms during the period concurrent with social and demographic changes. Material and Methods. All 50-year-old subjects living in two Swedish counties were asked to answer a mail questionnaire in 1992 and 2002. In the two cohorts, 6,343 and 5,798, respectively, responded (response rate 71.3% and 70.2%). Results. Striking differences in demographic, occupational, general, and oral health conditions were found. General health was reported to be less good, utilization of dental care decreased, whereas number of teeth increased. The prevalence of a number of intra-oral symptoms and orofacial symptoms increased significantly between 1992 and 2002. Reported bruxism increased from 18% in 1992 to 28% in 2002. Conclusion. The observed increase in reported orofacial pain symptoms during the 10-year period, concurrent with changes in society, deserves further attention by society and the dental community.     

The psychosocial impact of orofacial pain in trigeminal neuralgia patients: a systematic review

Trigeminal neuralgia (TN) is characterized by sharp, electric shock-like pain, which can be triggered by trivial stimuli. Although medical and surgical treatments are available for TN, some patients experience refractory pain, which has a significant impact on their quality of life. The aim of this systematic review was to determine the psychosocial impact of orofacial pain in patients with diagnosed TN. A search was initiated in three electronic databases (Embase, MEDLINE, PubMed) to identify potential studies for inclusion in the review. All types of study published in English that reported psychosocial measures using validated psychometric questionnaires were included. A total of 585 articles were retrieved from the search. These were screened thoroughly, leading to the selection of 13 articles for data extraction and final analysis. The results show the chronic overwhelming nature of TN, with pain levels varying from mild to severe. Psychometric scores indicated mild to moderate depression, moderate to severe anxiety, and moderate to severe functional limitation of daily life activities in TN patients. Therefore, psychological support within a multidisciplinary team is recommended for TN patients to help them cope better with their chronic disorder and to improve the efficacy of treatment.     

过度张口引起口面痛的作用机制研究

目的：深入研究过度张口引起口面痛的作用机制。方法：观察过度张口动物模型TMJ和咀嚼肌的组织病理改变及SP和PGE2、PGF2α的免疫反应;检测24名健康志愿过度张口前后口面部的痛阈变化。结果：过度张口引起了TMJ和咀嚼肌的损伤,损伤局部有SP和PGE2、PGF2α的明显聚积;过度张口后口面部的痛阈明显下降,24—48小时后痛阈基本恢复同前;对过度张口的反应存在个体差异和部位差异。结论：过度张口可损伤TMJ和咀嚼肌,引起口面部疼痛,此过程有内源性致痛物质的参与。     

Clinical examination of patients with orofacial pain

Abstract A thorough clinical examination of patients with orofacial pain is of paramount importance. The examination is time-consuming, but is usually fully rewarding in that it may prevent unnecessary or incorrect and often irreversible treatment, and clarify to the clinician and hopefully to the patient the nature of the patient's problem. Only then may proper treatment be rendered. In this context it should be noted that a skillfully performed examination in these patients in itself provides valuable and effective treatment, especially when muscular dysfunction is the primary cause of the pain.     

Effect of high‐frequency bio‐oxidative ozone therapy for masticatory muscle pain: a double‐blind randomised clinical trial

To evaluate the effect of bio‐oxidative ozone application at the points of greatest pain in patients with chronic masticatory muscle pain. A total number of 40 (40 women, with a mean age of 31·7) were selected after the diagnosis of myofacial pain dysfunction syndrome according to the Research Diagnostic Criteria for temporomandibular disorder (RDC/TMD). The patients were randomly divided into two groups: patients received the ozone therapy at the point of greatest pain, ozone group (OG; n = 20); patients received the sham ozone therapy at the point of greatest pain, placebo group (PG; n = 20). Ozone and placebo were applied three times per week, for a total of six sessions. Mandibular movements were examined, masticator muscles tenderness were assessed and pressure pain threshold (PPT) values were obtained. Subjective pain levels were evaluated using visual analogue sale (VAS). These assessments were performed at baseline, 1 month and 3 months. Ozono therapy decreased pain intensity and increased PPT values significantly from baseline to 1 month and 3 months in OG compared with PG. PPTs of the temporal (OG = 24·85 ± 6·65, PG = 20·65 ± 5·43, P = 0.035) and masseter (OG = 19·03 ± 6·42, PG = 14·23 ± 2·95, P = 0.007) muscles at 3 months of control (T2) were significantly higher in the OG group. PPT value of the lateral pole was also significantly higher at T2 in the OG group (OG = 21·25 ± 8·43, PG = 15·35 ± 4·18, P = 0.012). Mandibular movements did not show significant differences between treatment groups except right lateral excursion values at T2 (OG = 8·90 ± 1·77, PG = 6·85 ± 2·41, P = 0.003); however, OG demonstrated significantly better results over time. Overall improvements in VAS scores from baseline to 3 months were OG 67·7%; PG 48·4%. Although ozone therapy can be accepted as an alternative treatment modality in the management of masticatory muscle pain, sham ozone therapy (placebo) showed significant improvements in the tested parameters.