The repeatability of a non-invasive digital protocol proposed to evaluate the three-dimensional（3D） position of the occlusal plane in the face is assessed.Dental virtual models and soft tissue facial morphology of 2...The repeatability of a non-invasive digital protocol proposed to evaluate the three-dimensional（3D） position of the occlusal plane in the face is assessed.Dental virtual models and soft tissue facial morphology of 20 adult subjects were digitally integrated using a 3D stereophotogrammetric imaging system.The digital 3D coordinates of facial and dental landmarks were obtained by two different operators.Camper＇s（facial） and occlusal（dental） planes were individuated,and their 3D relationships were measured.The repeatability of the protocol was investigated and showed no significant differences in repeated digitizations.The angle between occlusal and Camper＇s planes was smaller than 26 in the frontal and horizontal projections.In the sagittal projection,the angle was observed to be,on average,4.9 6.The determined occlusal plane pitch,roll and yaw values show good agreement with previously published data obtained by different protocols.The current non-invasive method was repeatable,without inter-operator differences and can facilitate assessment of healthy subjects.展开更多
The putative causes of bruxism are multifactorial and there are no definite measures for bruxism management.The aim of this study was to evaluate the efficacy of biofeedback therapy on sleep bruxism,compared with occl...The putative causes of bruxism are multifactorial and there are no definite measures for bruxism management.The aim of this study was to evaluate the efficacy of biofeedback therapy on sleep bruxism,compared with occlusal splint.Twenty-four volunteers with sleep bruxism were divided into two groups：the GTB group that were treated with biofeedback therapy（n 512） and the GTO group that were treated with occlusal splint（n 512）.A mini pressure sensor integrated with a monitoring circuit by use of a maxillary biofeedback splint was fabricated.To foster the relaxation of the masticatory muscles and the nervous system,the wireless device received signals from bruxism events and vibrations alerted the bruxer when the threshold was exceeded.Total episodes and average duration of bruxism events during8 hours of sleep were analyzed with the monitoring program（TRMY1.0）.After 6 and 12 weeks,the episodes（P 50.001） and duration（P,0.05） in the GTB group declined dramatically.In contrast,there were no significant differences in the GTO group after the treatment（P.0.05）.Furthermore,the episodes had significant differences between the GTB group and the GTO group after the same period of treatment（P 5 0.000）.The results suggest that biofeedback therapy may be an effective and convenient measure for mild bruxers,when compared with occlusal splint therapy.The mini wireless biofeedback method may be of value for the diagnosis and management of bruxism in the future.展开更多
BACKGROUND Condylar osteophytes,a remodeling form of temporomandibular joint osteoarthritis(TMJ OA),mainly manifest as marginal angular outgrowths of the condyle.Previous researchers have advocated surgical removal of...BACKGROUND Condylar osteophytes,a remodeling form of temporomandibular joint osteoarthritis(TMJ OA),mainly manifest as marginal angular outgrowths of the condyle.Previous researchers have advocated surgical removal of condylar osteophytes.Reports on the effect of occlusal splint on TMJ OA patients’joints have mostly focused on treatment with this splint,which can reduce the absorption of the affected condyle and promote repair and regeneration.However,the effect of the splint on the dissolution of condylar osteophytes has not yet been reported.CASE SUMMARY A 68-year-old female patient suffered from occlusal discomfort with left facial pain for 2 years.Cone beam computed tomography showed a rare osteophyte on top of her left condyle.She was finally diagnosed with TMJ OA.The patient refused surgical treatment and received conservative treatment with a muscle balance occlusal splint.The pain experienced by the patient on the left side of her face was relieved,and her chewing ability recovered after treatment.The osteophyte dissolved,and the condylar cortex remained stable during long-term follow-up observations.CONCLUSION The muscle balance occlusal splint could be a noninvasive means of treating condylar osteophytes in TMJ OA patients.展开更多
BACKGROUND Bruxism is a jaw-muscle activity characterized by the clenching or grinding of teeth. It can be divided into nocturnal bruxism and diurnal bruxism(DB). DB secondary to antidepressants is rare and refractory...BACKGROUND Bruxism is a jaw-muscle activity characterized by the clenching or grinding of teeth. It can be divided into nocturnal bruxism and diurnal bruxism(DB). DB secondary to antidepressants is rare and refractory. Reports associated with antidepressant-induced DB are mostly anecdotal without long-term follow-up.The effect of drug intervention on antidepressant-induced DB is still contested.We herein report the first case of successful treatment of venlafaxine-induced DB with an occlusal splint.CASE SUMMARY This case report describes detailed 7-year follow-up of a patient with venlafaxineinduced DB treated with an occlusal splint. The patient who complained about involuntary daytime tooth grinding after taking venlafaxine for a period of 4 mo and was diagnosed with venlafaxine-induced DB. Subsequently, an occlusal splint with modified bilateral buccal-pterygoid pads was used to treat his tooth grinding and to protect the dental structures from tooth wearing. The patient reported remission of symptoms after several months of treatment. His grinding activity was gradually and stably controlled after 2 years, with an almost complete recovery from DB after 6 years.CONCLUSION The maxillary buccal-pterygoid splint can be used as a noninvasive approach to treat venlafaxine-induced DB.展开更多
Objective: To investigate the influence of occlusal splint thickness on mandibular movement. Methods: Stabilization occlusal splints of 3, 5 and 7 mm thickness were respectively used during clenching from light contac...Objective: To investigate the influence of occlusal splint thickness on mandibular movement. Methods: Stabilization occlusal splints of 3, 5 and 7 mm thickness were respectively used during clenching from light contact in intercuspal position and the movement of condyles and incisor point were recorded in 5 healthy subjects. Results:The condyles moved anteriorly and superiorly without wearing occlusal splint. When wearing the occlusal splints the condyles displaced anteriorly and inferiorly. The distance of displacement increased gradually with raising the thickness of splint, though the significant difference was just found in right condyle in superior- inferior movement. The condyles went again on a path of anterior and superior direction when subjects clenched from the displaced position. In right condyle the displacement was significantly greater at 7 mm splint than that at 3 mm splint both in anterior-posterior and inferior-superior direction, while in left condyle only in anterior-posterior direction. Meanwhile, the incisal point movement was larger at 7 mm splint than at 3 mm splint in inferior-superior direction. In tapping movement there were no significant differences in condyle movement between the different thickness of occlusal splint. However, the coefficient of variation in total cycle time was the greatest when wearing the splint of 7 mm. Conclusion: Occlusal splint of 7 mm has greater effect than that of 3 mm on condyle movement, but no obvious difference with occlusal splint of 5 mm. When occlusal splint of 7 mm is inserted, the stability of condyle might be influenced during tapping movement.展开更多
Stereoscopic three-dimensional echocardiography（S-3DE） is a novel displaying technol-ogy based on real-time 3-dimensional echocardiography （RT-3DE）. Our study was to evaluate the feasibility and efficiency of S-3D...Stereoscopic three-dimensional echocardiography（S-3DE） is a novel displaying technol-ogy based on real-time 3-dimensional echocardiography （RT-3DE）. Our study was to evaluate the feasibility and efficiency of S-3DE in the diagnosis of atrial septal defect （ASD） and its use in the guidance for transcatheter ASD occlusion. Twelve patients with secundum ASD underwent RT-3DE examination and 9 of the 12 were subjected to transcatheter closure of ASD. Stereoscopic vision was generated with a high-performance volume renderer with red-green stereoscopic glasses. S-3DE was compared with standard RT-3D display for the assessment of the shape, size, and the surrounding tis-sues of ASD and for the guidance of ASD occlusion. The appearance rate of coronary sinus and the mean formation time of the IVC, SVC were compared. Our results showed that S-3DE could measure the diameter of ASD accurately and there was no significant difference in the measurements between S-3DE and standard 3D display （2.89±0.73 cm vs 2.85±0.72 cm, P〉0.05; r=0.96, P〈0.05）. The appearance of coronary sinus for S-3DE was higher as compared with the standard 3D display （93.3% vs 100%）. The mean time of the IVC, SVC for S-3DE monitor was slightly shorter than that of the standard 3D display （11.0±3.8 s vs 10.3±3.6 s, P〉0.05）. The mean completion time of interven-tional procedure was shortened with S-3DE display as compared with standard 3D display （17.3±3.1 min vs 23.0±3.9 min, P〈0.05）. Stereoscopic three-dimensional echocardiography could improve the visualization of three-dimensional echocardiography, facilitate the identification of the adjacent structures, decrease the time required for interventional manipulation. It may be a feasible, safe, and efficient tool for guiding transcatheter septal occlusion or the surgical interventions.展开更多
Anterior repositioning splint(ARS)therapy is considered one of the most effective therapies for treating disc displacement-related temporomandibular disorders(TMDs),which account for a large proportion of TMD cases.Ow...Anterior repositioning splint(ARS)therapy is considered one of the most effective therapies for treating disc displacement-related temporomandibular disorders(TMDs),which account for a large proportion of TMD cases.Owing to the wide application of this therapy,the exact mechanism of remission has increasingly drawn attention.Given that practitioners have different views on ARS therapy,its indications are broadened,and operating methods diverged.This review attempts to provide an overview of ARS therapy and helps practitioners establish indications and suitable operating methods.Representative views in the past 10 years were summarised,and conclusions were drawn as follows:The mechanism of ARS therapy is mainly attributed to internal derangement correction,improvement of stress distribution and recently reported joint remodeling.It has an evident effect in the short term,and the most prevalent operating methods are protruding the mandible to the edge-to-edge position and wearing the ARS for 24 hours daily for 3-6 months.However,long-term stability is not optimal,and thus indications should be selected carefully.Notably,most of the clinical studies in this field are case analyses with low-quality evidence.Well-designed RCTs are required to further validate relevant theories.展开更多
目的评价咬合板结合家庭疗法在咀嚼肌肌筋膜疼痛的疗效。方法选取2019年6月至2021年6月于广西医科大学附属口腔医院口腔修复科进行稳定型咬合板结合家庭疗法治疗的咀嚼肌肌筋膜疼痛患者32例,分析治疗3个月后的临床有效率。于治疗前和治...目的评价咬合板结合家庭疗法在咀嚼肌肌筋膜疼痛的疗效。方法选取2019年6月至2021年6月于广西医科大学附属口腔医院口腔修复科进行稳定型咬合板结合家庭疗法治疗的咀嚼肌肌筋膜疼痛患者32例,分析治疗3个月后的临床有效率。于治疗前和治疗后3个月行疼痛视觉模拟评分(visual analogue scale,VAS)和T-ScanⅢ数字化咬合评估系统检查,分别评估患者的疼痛程度及咬合功能,咬合功能包括:(牙合)力不对称指数(asymmetry index of occlusal force,AOF)、(牙合)力中心点位置(center of force,COF)、(牙合)接触点数(number of occlusal contacts,NOC)、闭(牙合)时间(occlusal time,OT)。结果(1)治疗后,临床有效率为93.75%;(2)VAS、AOF、COF、OT均较治疗前降低(P<0.05);NOC在治疗前后差异无统计学意义(P>0.05)。结论稳定型咬合板结合家庭疗法治疗咀嚼肌肌筋膜疼痛可有效缓解疼痛和改善咬合功能。展开更多
Background Occlusal splints have been the preferred modalities in the management of myofascial temporomandibular disorders （TMDs）,but now controversy exists in reporting whether they are successful for TMDs treatmen...Background Occlusal splints have been the preferred modalities in the management of myofascial temporomandibular disorders （TMDs）,but now controversy exists in reporting whether they are successful for TMDs treatments.The aim of this study was to give objective evidence to the assessment of treatment effect of occlusal splints for myofascial TMDs patients by clinical assessments and surface electromyography （sEMG） measurements of masseter muscles （MM）.Methods Thirty-six patients （12 males and 24 females） aged 16-57 （38±11） years participated in the study.All participants diagnosed with myofascial TMD were randomized into two groups （18 of each）.Patients in the first group （A） were treated with occlusal splints for 1 month,while patients in the second group （B） were treated with placebo （non-occluding palatal） splints.Clinical assessments were performed at the beginning of the study and 1 month after treatment.sEMG measurements for MM were performed at mandibular postural position （MPP） and maximum intercuspal contacted position （ICP） 1 month after the treatment.The root mean square （RMS） and the median frequency （MF） as linear indices of sEMG data were used to demonstrate muscle activity and muscle fatigue.Data were analyzed by ANOVA and post hoc SNK test.The differences were considered significant at P 〈0.05.Results It was found that 89% of group A either completely recovered （39%） or clinically improved （50%）,while only 22% of group B had a spontaneous improvement.sEMG analysis showed that at MPP,the mean of RMS value of MM in group A was lower than that of group B,which shows statistical differences （P 〈0.01）.At ICP,the RMS value of MM in group A was higher than that of group B,which shows statistical differences （P 〈0.01）.At MPP,MF value of MM in group A was higher than that of group B （P 〈0.05）.At ICP,MF value of MM was lower than that of group B （P 〈0.01）.Conclusions Occlusal splint could eliminate or improve the signs and symptoms of TMD patients with myofascial pain.sEMG analysis indicates that the wearing of occlusal splints may reduce the degree of fatigue of the masticatory muscles.The splint therapy outcome has a correlation with the electromyographic changes in the masticatory muscles.展开更多
A novel method to extract a bounding box that contains the three-dimensional object from its spherical hologram is proposed. The proposed method uses the windowed Fourier transform to obtain the angular distribution o...A novel method to extract a bounding box that contains the three-dimensional object from its spherical hologram is proposed. The proposed method uses the windowed Fourier transform to obtain the angular distribution of the quasi-collimated beams at each position in the spherical hologram and estimates the bounding box by accumulating the quasi-collimated beams in the volume inside the spherical hologram. The estimated bounding box is then used to realize occlusion effect between the objects in the synthesis of the three-dimensional scene hologram.展开更多
文摘The repeatability of a non-invasive digital protocol proposed to evaluate the three-dimensional（3D） position of the occlusal plane in the face is assessed.Dental virtual models and soft tissue facial morphology of 20 adult subjects were digitally integrated using a 3D stereophotogrammetric imaging system.The digital 3D coordinates of facial and dental landmarks were obtained by two different operators.Camper＇s（facial） and occlusal（dental） planes were individuated,and their 3D relationships were measured.The repeatability of the protocol was investigated and showed no significant differences in repeated digitizations.The angle between occlusal and Camper＇s planes was smaller than 26 in the frontal and horizontal projections.In the sagittal projection,the angle was observed to be,on average,4.9 6.The determined occlusal plane pitch,roll and yaw values show good agreement with previously published data obtained by different protocols.The current non-invasive method was repeatable,without inter-operator differences and can facilitate assessment of healthy subjects.
基金The Bureau of Health of Jiangsu Province supported this study(H200939)the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD,2014-37)
文摘The putative causes of bruxism are multifactorial and there are no definite measures for bruxism management.The aim of this study was to evaluate the efficacy of biofeedback therapy on sleep bruxism,compared with occlusal splint.Twenty-four volunteers with sleep bruxism were divided into two groups：the GTB group that were treated with biofeedback therapy（n 512） and the GTO group that were treated with occlusal splint（n 512）.A mini pressure sensor integrated with a monitoring circuit by use of a maxillary biofeedback splint was fabricated.To foster the relaxation of the masticatory muscles and the nervous system,the wireless device received signals from bruxism events and vibrations alerted the bruxer when the threshold was exceeded.Total episodes and average duration of bruxism events during8 hours of sleep were analyzed with the monitoring program（TRMY1.0）.After 6 and 12 weeks,the episodes（P 50.001） and duration（P,0.05） in the GTB group declined dramatically.In contrast,there were no significant differences in the GTO group after the treatment（P.0.05）.Furthermore,the episodes had significant differences between the GTB group and the GTO group after the same period of treatment（P 5 0.000）.The results suggest that biofeedback therapy may be an effective and convenient measure for mild bruxers,when compared with occlusal splint therapy.The mini wireless biofeedback method may be of value for the diagnosis and management of bruxism in the future.
文摘BACKGROUND Condylar osteophytes,a remodeling form of temporomandibular joint osteoarthritis(TMJ OA),mainly manifest as marginal angular outgrowths of the condyle.Previous researchers have advocated surgical removal of condylar osteophytes.Reports on the effect of occlusal splint on TMJ OA patients’joints have mostly focused on treatment with this splint,which can reduce the absorption of the affected condyle and promote repair and regeneration.However,the effect of the splint on the dissolution of condylar osteophytes has not yet been reported.CASE SUMMARY A 68-year-old female patient suffered from occlusal discomfort with left facial pain for 2 years.Cone beam computed tomography showed a rare osteophyte on top of her left condyle.She was finally diagnosed with TMJ OA.The patient refused surgical treatment and received conservative treatment with a muscle balance occlusal splint.The pain experienced by the patient on the left side of her face was relieved,and her chewing ability recovered after treatment.The osteophyte dissolved,and the condylar cortex remained stable during long-term follow-up observations.CONCLUSION The muscle balance occlusal splint could be a noninvasive means of treating condylar osteophytes in TMJ OA patients.
文摘BACKGROUND Bruxism is a jaw-muscle activity characterized by the clenching or grinding of teeth. It can be divided into nocturnal bruxism and diurnal bruxism(DB). DB secondary to antidepressants is rare and refractory. Reports associated with antidepressant-induced DB are mostly anecdotal without long-term follow-up.The effect of drug intervention on antidepressant-induced DB is still contested.We herein report the first case of successful treatment of venlafaxine-induced DB with an occlusal splint.CASE SUMMARY This case report describes detailed 7-year follow-up of a patient with venlafaxineinduced DB treated with an occlusal splint. The patient who complained about involuntary daytime tooth grinding after taking venlafaxine for a period of 4 mo and was diagnosed with venlafaxine-induced DB. Subsequently, an occlusal splint with modified bilateral buccal-pterygoid pads was used to treat his tooth grinding and to protect the dental structures from tooth wearing. The patient reported remission of symptoms after several months of treatment. His grinding activity was gradually and stably controlled after 2 years, with an almost complete recovery from DB after 6 years.CONCLUSION The maxillary buccal-pterygoid splint can be used as a noninvasive approach to treat venlafaxine-induced DB.
文摘Objective: To investigate the influence of occlusal splint thickness on mandibular movement. Methods: Stabilization occlusal splints of 3, 5 and 7 mm thickness were respectively used during clenching from light contact in intercuspal position and the movement of condyles and incisor point were recorded in 5 healthy subjects. Results:The condyles moved anteriorly and superiorly without wearing occlusal splint. When wearing the occlusal splints the condyles displaced anteriorly and inferiorly. The distance of displacement increased gradually with raising the thickness of splint, though the significant difference was just found in right condyle in superior- inferior movement. The condyles went again on a path of anterior and superior direction when subjects clenched from the displaced position. In right condyle the displacement was significantly greater at 7 mm splint than that at 3 mm splint both in anterior-posterior and inferior-superior direction, while in left condyle only in anterior-posterior direction. Meanwhile, the incisal point movement was larger at 7 mm splint than at 3 mm splint in inferior-superior direction. In tapping movement there were no significant differences in condyle movement between the different thickness of occlusal splint. However, the coefficient of variation in total cycle time was the greatest when wearing the splint of 7 mm. Conclusion: Occlusal splint of 7 mm has greater effect than that of 3 mm on condyle movement, but no obvious difference with occlusal splint of 5 mm. When occlusal splint of 7 mm is inserted, the stability of condyle might be influenced during tapping movement.
文摘Stereoscopic three-dimensional echocardiography（S-3DE） is a novel displaying technol-ogy based on real-time 3-dimensional echocardiography （RT-3DE）. Our study was to evaluate the feasibility and efficiency of S-3DE in the diagnosis of atrial septal defect （ASD） and its use in the guidance for transcatheter ASD occlusion. Twelve patients with secundum ASD underwent RT-3DE examination and 9 of the 12 were subjected to transcatheter closure of ASD. Stereoscopic vision was generated with a high-performance volume renderer with red-green stereoscopic glasses. S-3DE was compared with standard RT-3D display for the assessment of the shape, size, and the surrounding tis-sues of ASD and for the guidance of ASD occlusion. The appearance rate of coronary sinus and the mean formation time of the IVC, SVC were compared. Our results showed that S-3DE could measure the diameter of ASD accurately and there was no significant difference in the measurements between S-3DE and standard 3D display （2.89±0.73 cm vs 2.85±0.72 cm, P〉0.05; r=0.96, P〈0.05）. The appearance of coronary sinus for S-3DE was higher as compared with the standard 3D display （93.3% vs 100%）. The mean time of the IVC, SVC for S-3DE monitor was slightly shorter than that of the standard 3D display （11.0±3.8 s vs 10.3±3.6 s, P〉0.05）. The mean completion time of interven-tional procedure was shortened with S-3DE display as compared with standard 3D display （17.3±3.1 min vs 23.0±3.9 min, P〈0.05）. Stereoscopic three-dimensional echocardiography could improve the visualization of three-dimensional echocardiography, facilitate the identification of the adjacent structures, decrease the time required for interventional manipulation. It may be a feasible, safe, and efficient tool for guiding transcatheter septal occlusion or the surgical interventions.
文摘Anterior repositioning splint(ARS)therapy is considered one of the most effective therapies for treating disc displacement-related temporomandibular disorders(TMDs),which account for a large proportion of TMD cases.Owing to the wide application of this therapy,the exact mechanism of remission has increasingly drawn attention.Given that practitioners have different views on ARS therapy,its indications are broadened,and operating methods diverged.This review attempts to provide an overview of ARS therapy and helps practitioners establish indications and suitable operating methods.Representative views in the past 10 years were summarised,and conclusions were drawn as follows:The mechanism of ARS therapy is mainly attributed to internal derangement correction,improvement of stress distribution and recently reported joint remodeling.It has an evident effect in the short term,and the most prevalent operating methods are protruding the mandible to the edge-to-edge position and wearing the ARS for 24 hours daily for 3-6 months.However,long-term stability is not optimal,and thus indications should be selected carefully.Notably,most of the clinical studies in this field are case analyses with low-quality evidence.Well-designed RCTs are required to further validate relevant theories.
文摘目的评价咬合板结合家庭疗法在咀嚼肌肌筋膜疼痛的疗效。方法选取2019年6月至2021年6月于广西医科大学附属口腔医院口腔修复科进行稳定型咬合板结合家庭疗法治疗的咀嚼肌肌筋膜疼痛患者32例,分析治疗3个月后的临床有效率。于治疗前和治疗后3个月行疼痛视觉模拟评分(visual analogue scale,VAS)和T-ScanⅢ数字化咬合评估系统检查,分别评估患者的疼痛程度及咬合功能,咬合功能包括:(牙合)力不对称指数(asymmetry index of occlusal force,AOF)、(牙合)力中心点位置(center of force,COF)、(牙合)接触点数(number of occlusal contacts,NOC)、闭(牙合)时间(occlusal time,OT)。结果(1)治疗后,临床有效率为93.75%;(2)VAS、AOF、COF、OT均较治疗前降低(P<0.05);NOC在治疗前后差异无统计学意义(P>0.05)。结论稳定型咬合板结合家庭疗法治疗咀嚼肌肌筋膜疼痛可有效缓解疼痛和改善咬合功能。
文摘Background Occlusal splints have been the preferred modalities in the management of myofascial temporomandibular disorders （TMDs）,but now controversy exists in reporting whether they are successful for TMDs treatments.The aim of this study was to give objective evidence to the assessment of treatment effect of occlusal splints for myofascial TMDs patients by clinical assessments and surface electromyography （sEMG） measurements of masseter muscles （MM）.Methods Thirty-six patients （12 males and 24 females） aged 16-57 （38±11） years participated in the study.All participants diagnosed with myofascial TMD were randomized into two groups （18 of each）.Patients in the first group （A） were treated with occlusal splints for 1 month,while patients in the second group （B） were treated with placebo （non-occluding palatal） splints.Clinical assessments were performed at the beginning of the study and 1 month after treatment.sEMG measurements for MM were performed at mandibular postural position （MPP） and maximum intercuspal contacted position （ICP） 1 month after the treatment.The root mean square （RMS） and the median frequency （MF） as linear indices of sEMG data were used to demonstrate muscle activity and muscle fatigue.Data were analyzed by ANOVA and post hoc SNK test.The differences were considered significant at P 〈0.05.Results It was found that 89% of group A either completely recovered （39%） or clinically improved （50%）,while only 22% of group B had a spontaneous improvement.sEMG analysis showed that at MPP,the mean of RMS value of MM in group A was lower than that of group B,which shows statistical differences （P 〈0.01）.At ICP,the RMS value of MM in group A was higher than that of group B,which shows statistical differences （P 〈0.01）.At MPP,MF value of MM in group A was higher than that of group B （P 〈0.05）.At ICP,MF value of MM was lower than that of group B （P 〈0.01）.Conclusions Occlusal splint could eliminate or improve the signs and symptoms of TMD patients with myofascial pain.sEMG analysis indicates that the wearing of occlusal splints may reduce the degree of fatigue of the masticatory muscles.The splint therapy outcome has a correlation with the electromyographic changes in the masticatory muscles.
基金partly supported by‘The Cross-Ministry Giga KOREA Project’of The Ministry of Science,IC Tand Future Planning,Korea.[No.GK13D0100,Development of Telecommunications Terminal with Digital Holographic Table-top Display]partly supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education(No.2013061913)
文摘A novel method to extract a bounding box that contains the three-dimensional object from its spherical hologram is proposed. The proposed method uses the windowed Fourier transform to obtain the angular distribution of the quasi-collimated beams at each position in the spherical hologram and estimates the bounding box by accumulating the quasi-collimated beams in the volume inside the spherical hologram. The estimated bounding box is then used to realize occlusion effect between the objects in the synthesis of the three-dimensional scene hologram.
