| 1. |
- Aisaiti, Adila, et al.
(author)
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Effect of photobiomodulation therapy on painful temporomandibular disorders
- 2021
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In: Scientific Reports. - : Nature Publishing Group. - 2045-2322. ; 11:1
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Journal article (peer-reviewed)abstract
- To evaluate the effect of photobiomodulation therapy (PBMT) on painful temporomandibular disorders (TMD) patients in a randomized, double-blinded, placebo-controlled manner. Participants were divided into a masseter myalgia group (n = 88) and a temporomandibular joint (TMJ) arthralgia group (n = 87) according to the Diagnostic Criteria for Temporomandibular Disorders (DC/TMD). Both groups randomly received PBMT or placebo treatment once a day for 7 consecutive days, one session. The PBMT was applied with a gallium-aluminum-arsenide (GaAlAs) laser (wavelength = 810 nm) at pre-determined points in the masseter muscle (6 J/cm2, 3 regions, 60 s) or TMJ region (6 J/cm2, 5 points, 30 s) according to their most painful site. Pain intensity was rated on a 0–10 numerical rating scale (NRS) and pressure pain thresholds (PPT) and mechanical sensitivity mapping were recorded before and after the treatment on day 1 and day 7. Jaw function was assessed by pain free jaw opening, maximum unassisted jaw opening, maximum assisted jaw opening, maximum protrusion and right and left excursion. Data were analyzed with a mixed model analysis of variance (ANOVA). Pain intensity in arthralgia patients decreased over time (P < 0.001) for both types of interventions, however, PBMT caused greater reduction in pain scores than placebo (P = 0.014). For myalgia patients, pain intensity decreased over time (P < 0.001) but without difference between interventions (P = 0.074). PPTs increased in both myalgia (P < 0.001) and TMJ arthralgia patients over time (P < 0.001) but without difference between interventions (P ≥ 0.614). Overall, PBMT was associated with marginally better improvements in range of motion compared to placebo in both myalgia and arthralgia patients. Pain intensity, sensory function and jaw movements improve after both PBMT and placebo treatments in myalgia and arthralgia patients indicating a substantial non-specific effect of PBMT.
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| 2. |
- Fan, Ruyi, et al.
(author)
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Microcirculation and somatosensory profiling of patients with periodontitis : a preliminary case control report
- 2021
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In: Clinical Oral Investigations. - : Springer. - 1432-6981 .- 1436-3771. ; 25, s. 1223-1233
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Journal article (peer-reviewed)abstract
- OBJECTIVES: The purpose of this preliminary study was to explore blood microcirculation and somatosensory profiles in periodontitis patients before and after non-surgical periodontal therapy.MATERIALS AND METHODS: Twenty patients (10 men and 10 women, 20 to 30 years old) and 20 age- and gender-matched healthy controls were included. Non-surgical periodontal therapy was performed for all patients. Clinical examination including pocket probing depth (PPD), clinical attachment loss (CAL), and bleeding on probing (BOP) were performed at baseline (BL), 1 week (1W), and 4 weeks (4W) after non-surgical periodontal therapy on 6 sites of tooth 32 and 42. Laser Doppler flowmetry (LDF) and quantitative sensory testing (QST) were applied at the attached gingiva of tooth 32 and 42 at BL, 1W, and 4W after non-surgical periodontal therapy. Data were analyzed with a two-way mixed-model of ANOVA.RESULTS: The PPD, CAL and BOP significantly improved after non-surgical periodontal therapy (p < 0.001). Periodontitis patients demonstrated a higher tissue microvascular blood cell concentration (p = 0.015) and a significant gain in thermal (p = 0.037) and mechanical (p = 0.003) somatosensory function compared to controls. After non-surgical periodontal therapy, the flux (p = 0.002) and speed (p = 0.008) of blood flow decreased significantly and thermal (p = 0.029) and mechanical (p < 0.001) somatosensory function were reversed.CONCLUSION: Gingival microcirculation and somatosensory function seem impaired in patients with periodontitis and are reversed following non-surgical periodontal therapy.CLINICAL RELEVANCE: LDF and QST may be appropriate tools to further characterize gingival inflammation and treatment responses in periodontitis.
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| 3. |
- Gou, Huiqing, et al.
(author)
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Adjunctive effects of laser therapy on somatosensory function and vasomotor regulation of periodontal tissues in patients with periodontitis : A randomized controlled clinical trial
- 2020
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In: Journal of Periodontology. - : John Wiley & Sons. - 0022-3492 .- 1943-3670. ; 91:10, s. 1310-1317
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Journal article (peer-reviewed)abstract
- BACKGROUND: The purpose of this prospective study was to compare the changes in periodontal somatosensory function and microcirculation in patients with periodontitis following initial treatment with scaling and root planing (SRP) with or without adjuvant laser therapy.METHODS: Twenty-four patients suffering from periodontitis were recruited and randomly allocated into a split-mouth design to either SRP combined laser therapy side (test side) or SRP only side (control side). All treatments were performed by the same investigator at a single visit. Laser Doppler Flowmetry (LDF) and Quantitative Sensory Testing (QST) were performed at baseline (W0), 1 week (1W), 2 weeks (2W), and 4 weeks (4W) after treatment on both sides of the attached gingiva of the maxillary lateral incisor. Clinical examination including pocket probing depth (PPD) and bleeding on probing (BOP) was performed at W0, 2W, and 4W on both sides. Data were analyzed with two-way analysis of variance (ANOVA).RESULTS: The PPD and BOP significantly improved after treatment (P <0.001). The LDF values were significantly decreased on both sides at all follow-up time points (P <0.001), temperature was increased only on the test side (P = 0.017) whereas there was no significant change on the control side (P = 0.792). Significantly less sensitivity was observed for all QST parameters (P <0.030) except for warmth detection after treatment.CONCLUSION: Adjunctive use of laser therapy did not provide any significant clinically advantage or additional effects on the recovery of periodontal somatosensory function or gingival microcirculation in the present study. This article is protected by copyright. All rights reserved.
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| 4. |
- Zhang, Yuanxiu, et al.
(author)
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Effect of transcutaneous electrical nerve stimulation on jaw movement-evoked pain in patients with TMJ disc displacement without reduction and healthy controls
- 2020
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In: Acta Odontologica Scandinavica. - : Taylor & Francis. - 0001-6357 .- 1502-3850. ; 78:4, s. 309-320
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Journal article (peer-reviewed)abstract
- Objective: Transcutaneous electrical nerve stimulation (TENS) may serve as non-invasive intervention for painful temporomandibular disorders (TMD) to improve jaw motor function, but its efficacy is still debated. This parallel study evaluated the effect of TENS on pain and movement patterns after repeated jaw movements in patients with painful temporomandibular joints (TMJ) and disc displacement without reduction (DDwoR), and compared with healthy controls.Material and Methods: 20 patients with TMJ pain and DDwoR and 20 age- and gender-matched healthy volunteers were randomly assigned to TENS/sham TENS (sTENS) intervention groups in a block design (10 in each group). Participants performed 20 repeated jaw movements (4 x 5 sessions), and reported pain intensity on a 0-10 Numerical Rating Scale (NRS) subsequently both before and after the intervention. Data were tested by repeated measures analysis of variance (ANOVA).Results: Significant increase of pain intensity and reduction of opening range were shown within repeated jaw movements in TMJ pain patients in contrast to healthy participants (p ≤ .001). Pain was significantly reduced during repeated open-close (p = .007), fast open-close (p = .016) and horizontal movements (p = .023), accompanied with increased opening range (p = .033) and open-close velocity (p = .019) with TENS intervention when compared with sTENS group (p > .05) in TMJ pain patients.Conclusions: This study indicated that movement-evoked pain was reduced either spontaneously or by sTENS in TMJ pain patients with DDwoR, and interestingly, that TENS could attenuate movement-evoked pain and improve jaw motor function during repeated jaw movements. The findings may have implications for TENS treatment in TMJ pain patients with DDwoR.
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| 5. |
- Zhou, Yanli, et al.
(author)
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Dentists have a high occupational risk of neck disorders with impact on somatosensory function and neck mobility
- 2021
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In: Journal of Occupational Health. - : John Wiley & Sons. - 1341-9145 .- 1348-9585. ; 63:1
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Journal article (peer-reviewed)abstract
- Objectives Musculoskeletal disorders (MSDs) in the neck and shoulder region may be associated with significant impairment of quality of life and well-being. The study was to determine the prevalence of painful MSDs in Chinese dentists and evaluate somatosensory function and neck mobility compared with non-dental professional controls. Methods One hundred dentists (age: 36.5 +/- 9.8 years) and 102 controls (age: 36.2 +/- 10.0 years) were recruited between September 2019 and December 2020. The Medical Outcome Study 36-item short-form health survey questionnaire and information of MSDs history were recorded. The cervical range of motion (CROM) with and without pain, and the pressure pain thresholds (PPTs) of the facial and neck muscles were tested. Chi-square test, Mann-Whitney U test and multiple linear regression analysis were used to analyze the data. The factors in the multiple linear regression analysis were occupation, working age, and gender. Results The prevalence rate of neck pain was significantly higher in dentists (73.0%) compared with the controls (52.0%) (P = .002). The regression models of cervical range of posterior extension, lateral flexion and rotation were statistically significant (P <= .001). The regression models of PPTs of the tested facial and neck muscles were statistically significant (P < .001). Conclusion Dentists are at higher risk of neck pain. The bigger cervical range of left rotation of dentists could be related to the working posture. The lower PPTs in dentists may reflect a hypersensitivity in the facial and neck muscles. Preventive measures are needed to reduce occupational hazards in dentists.
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| 6. |
- Liu, Jingjing, et al.
(author)
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Effects of short-term motor training on accuracy and precision of simple jaw and finger movements after orthodontic treatment and orthognathic surgery : A case-control study
- 2023
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In: Journal of Oral Rehabilitation. - : John Wiley & Sons. - 1365-2842. ; 50:8, s. 635-643
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Journal article (peer-reviewed)abstract
- BACKGROUND: Orthognathic surgery has been performed with increasing frequency for the treatment of severe malocclusion, yet the postsurgical neuromuscular recovery of patients has been inadequately studied.OBJECTIVE: To investigate the effect of short-term and simple jaw motor training on accuracy and precision of jaw motor control in patients following orthodontic treatment and orthognathic surgery.METHODS: ) to describe the motor performance. Furthermore, the changes in amplitude before and after training were measured in percentage.RESULTS: of simple jaw and finger movements significantly decreased after motor training (p ≤ .018) in all groups. The relative changes in finger movements were higher than jaw movements (p < .001) but with no differences among the groups (p ≥ .247).CONCLUSION: Both accuracy and precision of simple jaw and finger movements improved after short-term motor training in all three groups, demonstrating the inherent potential for optimization of novel motor tasks. Finger movements improved more than jaw movements but with no differences between groups, suggesting that changes in occlusion and craniofacial morphology are not associated with impaired neuroplasticity or physiological adaptability of jaw motor function.
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| 7. |
- Zhu, Ling, et al.
(author)
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Sensory recovery and oral health-related quality of life following tongue reconstruction using non-innervated radial forearm free flaps
- 2021
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In: Oral Oncology. - : Elsevier. - 1368-8375 .- 1879-0593. ; 121
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Journal article (peer-reviewed)abstract
- OBJECTIVES: This study aimed to monitor the recovery of somatosensory function and oral health-related quality of life after tongue reconstruction using a non-innervated radial forearm free flap (RFFF).METHODS: Twenty patients (9 men, age: 42-67 years) underwent tongue reconstruction with non-innervated RFFFs, and twenty age- and sex-matched controls were included in this study. Quantitative sensory testing (QST), including cold, warm, and mechanical detection thresholds (CDT, WDT, MDT); cold, heat, and mechanical pain thresholds (CPT, HPT, MPT); and static two-point, sharp/blunt, and direction discrimination (S2-PD, S/BD, DD) were determined 9 months and 18 months after surgery on the surgical (9 M, 18 M) and contralateral sides (9Mc, 18Mc). Oral Health Impact Profile-49 (OHIP-49) was used to determine the oral-related quality of life of participants.RESULTS: All parameters showed significantly lower sensitivity at 9 M and 18 M (p < 0.001) compared to those for the controls and the contralateral side, except for DD (p = 0.101). In addition, the parameters showed a significant decrease in sensitivity for 9Mc and 18Mc (p ≤ 0.043) compared to those for the controls, except for MPT, HPT, S/SD, and DD (p ≥ 0.453). Findings on WDT, MPT, S2-PD, and DD (p ≤ 0.046) indicated significantly higher somatosensory function at 18 M than that at 9 M. MDT and MPT (p ≤ 0.038) showed significantly higher sensitivity at 18Mc than at 9Mc. Scores for all dimensions of OHIP-49 were significantly higher in patients (decrease in quality of life, p ≤ 0.002) than in controls, except for physical discomfort (p = 0.51). However, the scores were significantly higher at 18 M than at 9 M (p ≤ 0.011), except for handicap (p = 0.36). Postoperative chemotherapy was significantly correlated with impaired thermal sensitivity of the flaps (WDT, p = 0.049).CONCLUSION: The present findings showed significant impairment in somatosensory function on both the surgical and contralateral sides of patients with RFFFs. However, a significant increase in somatosensory function was observed on both sides over time. Somatosensory disturbances observed after surgery were associated with poor oral health-related quality of life.
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