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Papers by masakazu nishibori
Journal of the Japanese Association of Periodontology, 1996
Anesthesia progress
A Kirshner wire penetrated and transfixed the endotracheal tube placed to maintain a patient for ... more A Kirshner wire penetrated and transfixed the endotracheal tube placed to maintain a patient for open reduction of a malar bone fracture. To avoid such incidents, a radiographic check should be made soon after wire placement, and tracheotomy equipment should be available in the oral surgery suite.
Anesthesia progress, 1990
Intravenous flunitrazepam sedation was evaluated in 526 dental out-patients. The sedative effect ... more Intravenous flunitrazepam sedation was evaluated in 526 dental out-patients. The sedative effect and amnesia to the local anesthetic injections was acceptable, as was the patients' evaluation of the method. Cardiorespiratory changes were minimal and venous complications extremely rare. Romberg's test performed 120 minutes after administration was normal in almost all cases. The patients' most common complaint after leaving the clinic was oral pain from the dental procedure. The results of this case series that intravenous flunitrazepam sedation is useful for dentistry.
The International journal of prosthodontics
The aim of this study was to investigate the loss of teeth in positions mesially adjacent to impl... more The aim of this study was to investigate the loss of teeth in positions mesially adjacent to implant-supported fixed dentures (IFDs) after insertion of IFDs in unilateral free-end edentulous spaces in the mandible at dental clinics. There were a total of 157 adjacent teeth. Nine adjacent teeth (5.73%, 9 of 157), 9 opposing teeth (2.59%, 9 of 348), 38 posterior teeth (1.93%, 38 of 1,964), and 3 anterior teeth (0.22%, 3 of 1,380) were lost during the observation period. The percentage of lost adjacent teeth was higher than that of posterior teeth (P = .002). Teeth in positions adjacent to the IFDs require more attention than other remaining teeth.
Masui. The Japanese journal of anesthesiology, 1986
The Bulletin of Tokyo Dental College, 2013
The purpose of this study was to analyze the survival rate in autotransplanted premolars with com... more The purpose of this study was to analyze the survival rate in autotransplanted premolars with complete root formation in dental clinics. Participating dentists were requested to provide information on transplantations they had undertaken between 1 January 1990 and 31 December 2010. Data on a total of 708 teeth from 637 patients were collected. Data for other tooth types and for teeth with incomplete root formation were eliminated. In this study, data on 40 teeth in 35 patients were analyzed. Participants consisted of 17 men and 18 women ranging from 24 to 79 years in age (mean age, 43.7 years). The cumulative survival rate was 100% at the 5-year mark and 72.7% at 10 years, as calculated by the Kaplan-Meier method. Single-factor analysis revealed that "transplanted to the molar regions" was a significant risk factor (p<0.05) influencing the survival of transplanted teeth. However, a Cox regression analysis showed no significance. The results of this study suggest that, in cases where there is a suitable donor tooth and the oral condition is good, premolar autotransplantation is a viable treatment option, even when there is complete root formation in the donor teeth.
The Bulletin of Tokyo Dental College, 2013
The main reasons for loss of autotransplanted teeth are different from those involved in natural ... more The main reasons for loss of autotransplanted teeth are different from those involved in natural teeth loss. The aim of this study was to investigate which procedures were employed to treat spaces vacated when autotransplanted teeth were lost. Participating dentists were requested to provide information on transplantations they had undertaken. A total of 614 teeth in 552 patients (37 dentists) ranging in age from 17 to 79 years (mean age: 44.1 years) were examined. A total of 102 transplanted teeth were lost during the observation period. Procedures for treatment of spaces vacated were not influenced by main reason for transplanted tooth loss. The procedure used to treat depended on the original prosthodontic treatment of the transplanted teeth. For single crowns, the spaces were left empty (33.9%) or replaced by bridge work (30.5%), implants (20.3%), or dentures (10.2%). For single crowns in the upper and lower second molar regions, the spaces were usually left empty (upper 100%, lower 71.4%), while for those in the upper and lower first molar regions, the spaces were often replaced by bridge work (upper 41.7%, lower 50.0%). For bridge abutments, spaces were replaced by dentures (42.9%), implants (33.3%), or left empty (14.3%), and in the lower second molar region, they were mostly replaced by implants (5 cases, 41.7%). For most denture abutment cases, the spaces were replaced by dentures (88.9%). During the survival period of the transplanted teeth, the masticatory burden on the other teeth is reduced and the adjacent teeth are supported by the transplanted tooth. Even if transplanted
Pain Practice, 2010
Background: Burning mouth syndrome (BMS) is characterized by an oral burning sensation (OBS) in t... more Background: Burning mouth syndrome (BMS) is characterized by an oral burning sensation (OBS) in the tongue or other oral mucous membrane in the absence of any clinical abnormal findings. It frequently affects middle-aged and aged women. Although there are many oral disorders with OBS besides BMS, the prevalence of OBS is unclear. Aim: To investigate the prevalence of OBS and analyze the gender differences in a Japanese population. Methods: The study subjects were 2599 dental patients in two dental offices in Tokyo, Japan. The prevalence of OBS was investigated using a questionnaire. Results: The mean ages of the subjects were 42.7 1 13.8 (mean 1 SD) years of age in male and 40.1 1 15.4 (mean 1 SD) years of age in female. The prevalence of OBS "at present" was 2.8% of 1310 male subjects and 3.2% of 1289 female subjects. There was no statistically significant difference between them for each decade. The prevalence including "at present" and "in the past" were 9.3% in male subjects and 10.8% in female subjects; this difference was not statistically significant. Conclusion: These findings fail to demonstrate a female predilection for OBS.
Journal of Oral Rehabilitation, 2012
The aim of this study was to investigate the risk factors affecting long-term prognosis of autotr... more The aim of this study was to investigate the risk factors affecting long-term prognosis of autotransplantation of third molars with complete root formation in males at dental clinics. Participating dentists were requested to provide information on transplantations they had undertaken from 1 January 1990 to 31 December 2010. Data on a total of 708 teeth from 637 patients were collected. After data screening and elimination, participants of this study consisted of 183 teeth of 171 males ranging from 20 to 72 years of age (mean age, 44AE8 years). The cumulative survival rate was 86AE0% at the 5-year mark, 59AE1% at 10 years and 28AE0% at 15 years. The mean survival time was 134AE5 months, as calculated by the Kaplan-Meier method. Single factor analysis using the log-rank test showed that the following factors had significant influence (P < 0AE05) on survival of transplanted teeth: periodontal disease as the reason for recipient site tooth extraction, fewer than 25 present teeth and Eichner index Groups B1 to C. Cox regression analysis examined five factors: age, smoking habit, recipient site extraction caused by periodontal disease, fewer than 25 present teeth and Eichner index. This analysis showed that two of these factors were significant: fewer than 25 present teeth was 2AE63 (95% CI, 1AE03-6AE69) and recipient site extraction caused by periodontal disease was 3AE80 (95% CI, 1AE61-9AE01). The results of this study suggest that long-term survival of transplanted teeth in males is influenced not only by oral bacterium but also by occlusal status.
Nihon Shishubyo Gakkai Kaishi (Journal of the Japanese Society of Periodontology), 2008
Shinoda Dental Clinic Abstract：A patient with generalized chronic periodontitis and posterior bit... more Shinoda Dental Clinic Abstract：A patient with generalized chronic periodontitis and posterior bite collapse was administered comprehensive treatment, including peiodontal surgery, dental implants and orthodontic treatment. A modified-hawley bite plane was also used to establish a proper position of the mandible. The attachment level and occlusion were well maintained for more than 3 years.
Implant Dentistry, 1995
ABSTRACT
Nihon Shishubyo Gakkai Kaishi (Journal of the Japanese Society of Periodontology), 1989
Journal of the Japanese Association of Periodontology, 1996
Anesthesia progress
A Kirshner wire penetrated and transfixed the endotracheal tube placed to maintain a patient for ... more A Kirshner wire penetrated and transfixed the endotracheal tube placed to maintain a patient for open reduction of a malar bone fracture. To avoid such incidents, a radiographic check should be made soon after wire placement, and tracheotomy equipment should be available in the oral surgery suite.
Anesthesia progress, 1990
Intravenous flunitrazepam sedation was evaluated in 526 dental out-patients. The sedative effect ... more Intravenous flunitrazepam sedation was evaluated in 526 dental out-patients. The sedative effect and amnesia to the local anesthetic injections was acceptable, as was the patients' evaluation of the method. Cardiorespiratory changes were minimal and venous complications extremely rare. Romberg's test performed 120 minutes after administration was normal in almost all cases. The patients' most common complaint after leaving the clinic was oral pain from the dental procedure. The results of this case series that intravenous flunitrazepam sedation is useful for dentistry.
The International journal of prosthodontics
The aim of this study was to investigate the loss of teeth in positions mesially adjacent to impl... more The aim of this study was to investigate the loss of teeth in positions mesially adjacent to implant-supported fixed dentures (IFDs) after insertion of IFDs in unilateral free-end edentulous spaces in the mandible at dental clinics. There were a total of 157 adjacent teeth. Nine adjacent teeth (5.73%, 9 of 157), 9 opposing teeth (2.59%, 9 of 348), 38 posterior teeth (1.93%, 38 of 1,964), and 3 anterior teeth (0.22%, 3 of 1,380) were lost during the observation period. The percentage of lost adjacent teeth was higher than that of posterior teeth (P = .002). Teeth in positions adjacent to the IFDs require more attention than other remaining teeth.
Masui. The Japanese journal of anesthesiology, 1986
The Bulletin of Tokyo Dental College, 2013
The purpose of this study was to analyze the survival rate in autotransplanted premolars with com... more The purpose of this study was to analyze the survival rate in autotransplanted premolars with complete root formation in dental clinics. Participating dentists were requested to provide information on transplantations they had undertaken between 1 January 1990 and 31 December 2010. Data on a total of 708 teeth from 637 patients were collected. Data for other tooth types and for teeth with incomplete root formation were eliminated. In this study, data on 40 teeth in 35 patients were analyzed. Participants consisted of 17 men and 18 women ranging from 24 to 79 years in age (mean age, 43.7 years). The cumulative survival rate was 100% at the 5-year mark and 72.7% at 10 years, as calculated by the Kaplan-Meier method. Single-factor analysis revealed that "transplanted to the molar regions" was a significant risk factor (p<0.05) influencing the survival of transplanted teeth. However, a Cox regression analysis showed no significance. The results of this study suggest that, in cases where there is a suitable donor tooth and the oral condition is good, premolar autotransplantation is a viable treatment option, even when there is complete root formation in the donor teeth.
The Bulletin of Tokyo Dental College, 2013
The main reasons for loss of autotransplanted teeth are different from those involved in natural ... more The main reasons for loss of autotransplanted teeth are different from those involved in natural teeth loss. The aim of this study was to investigate which procedures were employed to treat spaces vacated when autotransplanted teeth were lost. Participating dentists were requested to provide information on transplantations they had undertaken. A total of 614 teeth in 552 patients (37 dentists) ranging in age from 17 to 79 years (mean age: 44.1 years) were examined. A total of 102 transplanted teeth were lost during the observation period. Procedures for treatment of spaces vacated were not influenced by main reason for transplanted tooth loss. The procedure used to treat depended on the original prosthodontic treatment of the transplanted teeth. For single crowns, the spaces were left empty (33.9%) or replaced by bridge work (30.5%), implants (20.3%), or dentures (10.2%). For single crowns in the upper and lower second molar regions, the spaces were usually left empty (upper 100%, lower 71.4%), while for those in the upper and lower first molar regions, the spaces were often replaced by bridge work (upper 41.7%, lower 50.0%). For bridge abutments, spaces were replaced by dentures (42.9%), implants (33.3%), or left empty (14.3%), and in the lower second molar region, they were mostly replaced by implants (5 cases, 41.7%). For most denture abutment cases, the spaces were replaced by dentures (88.9%). During the survival period of the transplanted teeth, the masticatory burden on the other teeth is reduced and the adjacent teeth are supported by the transplanted tooth. Even if transplanted
Pain Practice, 2010
Background: Burning mouth syndrome (BMS) is characterized by an oral burning sensation (OBS) in t... more Background: Burning mouth syndrome (BMS) is characterized by an oral burning sensation (OBS) in the tongue or other oral mucous membrane in the absence of any clinical abnormal findings. It frequently affects middle-aged and aged women. Although there are many oral disorders with OBS besides BMS, the prevalence of OBS is unclear. Aim: To investigate the prevalence of OBS and analyze the gender differences in a Japanese population. Methods: The study subjects were 2599 dental patients in two dental offices in Tokyo, Japan. The prevalence of OBS was investigated using a questionnaire. Results: The mean ages of the subjects were 42.7 1 13.8 (mean 1 SD) years of age in male and 40.1 1 15.4 (mean 1 SD) years of age in female. The prevalence of OBS "at present" was 2.8% of 1310 male subjects and 3.2% of 1289 female subjects. There was no statistically significant difference between them for each decade. The prevalence including "at present" and "in the past" were 9.3% in male subjects and 10.8% in female subjects; this difference was not statistically significant. Conclusion: These findings fail to demonstrate a female predilection for OBS.
Journal of Oral Rehabilitation, 2012
The aim of this study was to investigate the risk factors affecting long-term prognosis of autotr... more The aim of this study was to investigate the risk factors affecting long-term prognosis of autotransplantation of third molars with complete root formation in males at dental clinics. Participating dentists were requested to provide information on transplantations they had undertaken from 1 January 1990 to 31 December 2010. Data on a total of 708 teeth from 637 patients were collected. After data screening and elimination, participants of this study consisted of 183 teeth of 171 males ranging from 20 to 72 years of age (mean age, 44AE8 years). The cumulative survival rate was 86AE0% at the 5-year mark, 59AE1% at 10 years and 28AE0% at 15 years. The mean survival time was 134AE5 months, as calculated by the Kaplan-Meier method. Single factor analysis using the log-rank test showed that the following factors had significant influence (P < 0AE05) on survival of transplanted teeth: periodontal disease as the reason for recipient site tooth extraction, fewer than 25 present teeth and Eichner index Groups B1 to C. Cox regression analysis examined five factors: age, smoking habit, recipient site extraction caused by periodontal disease, fewer than 25 present teeth and Eichner index. This analysis showed that two of these factors were significant: fewer than 25 present teeth was 2AE63 (95% CI, 1AE03-6AE69) and recipient site extraction caused by periodontal disease was 3AE80 (95% CI, 1AE61-9AE01). The results of this study suggest that long-term survival of transplanted teeth in males is influenced not only by oral bacterium but also by occlusal status.
Nihon Shishubyo Gakkai Kaishi (Journal of the Japanese Society of Periodontology), 2008
Shinoda Dental Clinic Abstract：A patient with generalized chronic periodontitis and posterior bit... more Shinoda Dental Clinic Abstract：A patient with generalized chronic periodontitis and posterior bite collapse was administered comprehensive treatment, including peiodontal surgery, dental implants and orthodontic treatment. A modified-hawley bite plane was also used to establish a proper position of the mandible. The attachment level and occlusion were well maintained for more than 3 years.
Implant Dentistry, 1995
ABSTRACT
Nihon Shishubyo Gakkai Kaishi (Journal of the Japanese Society of Periodontology), 1989