Japan Prosthodontic Society Research Articles

What is expected for Japan Prosthodontic Society?

What is expected for Japan Prosthodontic Society?

Usage of English prosthodontic terms 2019 in Japan

The use of a uniform terminology is important to avoid misunderstanding of concepts or procedures in discussion. The usage of English prosthodontic terms in Japan was investigated in the current study. English prosthodontic terms listed in The Glossary of Prosthodontic Terms edited by the Japan Prosthodontic Society (GPTJ-5) were compared to those in The Glossary of Prosthodontic Terms ninth edition (GPT-9). A small number of terms labeled as objectionable in GPT-9 were listed in GPTJ-5. This might indicate that it takes a long time to replace terms that are used widely.

Trend and its international value of the research of Japan Prosthodontic Society and Journal of Prosthodontic Research

Trend and its international value of the research of Japan Prosthodontic Society and Journal of Prosthodontic Research

Dental implant care and trouble among dependent patients based on the questionnaire survey among Japanese dental practitioners

BackgroundSelf-care and professional care of implants may prove difficult for elderly people who require nursing care. However, the actual state of care and problems remains unknown. In this study, we investigated the actual state of implant problems in elderly people living in their own home or in a nursing home who received visiting dental treatment.MethodsWe mailed questionnaire survey forms to 2339 representatives or specialists who were members of the Japanese Society of Oral Implantology, the Japanese Society of Gerodontology or the Japan Prosthodontic Society. We narrowed down the respondents to those who provided visiting dental treatment, and analyzed the actual state of implants observed during visiting dental treatment (type, care, problems, countermeasures, etc.).ResultsOf the 924 dentists who responded to the questionnaire survey, 291 (22%) provided visiting dental treatment. While the majority of implant types encountered in the previous 12 months were root-form implants, there were still a certain number of blade and subperiosteal implants. Daily implant care involved mostly cleaning with a toothbrush + auxiliary tools. The most frequent implant problems encountered in the past were difficulty in cleaning and peri-implantitis. Medication and antiphlogistic treatment were most frequently adopted as countermeasures to implant problems, followed by observation. When we classified the results into those for the dentists who provided implant treatment and those for the dentists who did not, we found that many of the dentists who did not provide implant treatment opted for observation or medication, while those who provided implant treatment also implemented removal of superstructure, retightening of screws, repair and so forth.ConclusionsWe found that many of the implant troubles encountered by dentists who provided visiting dental care were difficulty in cleaning or peri-implantitis, and that the actions taken against these troubles varied depending on the experience of the dentist performing the implant treatment. Our study also revealed that dentists who provide visiting dental care need to acquire knowledge and skills of implant treatment, to have actions prepared in case they encounter such cases, or to closely coordinate with dentists who specialize in implants.

Official point of view by Japan Prosthodontic Society on the invited article entitled “Occupational health management in workplace of dental technicians”

Official point of view by Japan Prosthodontic Society on the invited article entitled “Occupational health management in workplace of dental technicians”

A multi-centered epidemiological study evaluating the validity of the treatment difficulty indices developed by the Japan Prosthodontic Society

A multi-centered epidemiological study evaluating the validity of the treatment difficulty indices developed by the Japan Prosthodontic Society

Japan Prosthodontic Society has joined to a national consortium for “Healthy Food and Environment” first as a dental academic society

Japan Prosthodontic Society has joined to a national consortium for “Healthy Food and Environment” first as a dental academic society

A multi-centered epidemiological study evaluating the validity of the treatment difficulty indices developed by the Japan Prosthodontic Society

PurposeThe Japan Prosthodontic Society developed a multi-axis assessment protocol to evaluate the complex variations in patients who need prosthodontic care, and to classify the level of treatment difficulty. A previous report found the protocol to be sufficiently reliable. The purpose of this multi-center cohort study was to evaluate the validity of this multi-axis assessment protocol. MethodsThe treatment difficulty was evaluated using the multi-axis assessment protocol before starting prosthodontic treatment. The time required for active prosthodontic treatment, medical resources such as treatment cost, and changes in the oral health-related QOL before and after treatment, were evaluated after treatment completion. The construct validity of this protocol was assessed by the correlation between the dentist’s pre-operative subjective assessment of the treatment difficulty, and the level of difficulty determined by this protocol. The predictive validity was assessed estimating the correlations between a “comprehensive level of treatment difficulty” based on the four axes of this protocol and total treatment cost, total treatment time, and changes in the oral health-related QOL before and after treatment. ResultsThe construct validity of this protocol was well documented except for psychological assessment. Regarding the predictive validity, the comprehensive level of treatment difficulty assessed before treatment was significantly correlated with the three surrogate endpoints known to be related to the treatment difficulty (total treatment cost, treatment time, and improvement in the oral health-related QOL). To further clarify the validity of the protocol according to patients’ oral condition, a subgroup analysis by defects was performed. Analyses revealed that treatment difficulty assessment before treatment was significantly related to one or two surrogate endpoints in the fully edentulous patients and the partially edentulous patients. No significant relationship was observed in the patients with mixture of full/partial edentulism and the patients with teeth problems, possibly due to the small sample size in these groups. ConclusionThis study revealed that the multi-axis assessment protocol was sufficiently valid to predict the level of treatment difficulty in prosthodontic care in patients with fully edentulous defects and with partially edentulous defects.

日本補綴歯科学会第124回学術大会（大宮）基礎実習改善のための情報交換に関する報告

補綴臨床基礎実習は，診療参加型臨床実習の充実を図る上で重要である．各大学における補綴臨床基礎実習の担当教員を対象として，同実習の現状と問題点についての意見交換（ワークショップ）がすでに企画，報告されてきた．しかし，各大学における同実習の具体的な内容について，各大学の指導教員自身による確認と情報交換を希望する意見が少なくなかった．

Reliability and validity of the patient disability-oriented diagnostic nomenclature system for prosthetic dentistry

PurposeThe Japan Prosthodontic Society (JPS) has proposed a new diagnostic nomenclature system (DNS), based on pathogenesis and etiology, to facilitate and improve prosthodontic treatment. This system specifies patient disability and the causative factor (i.e. “B (disability) caused by A (causative factor)”). The purpose of this study was to examine the reliability and validity of this DNS. Study selectionThe JPS Clinical Guideline Committee assessed mock patient charts and formulated disease names using the new DNS. Fifty validators, comprising prosthodontic specialists and dental residents, made diagnoses using the same patient charts. Reliability was evaluated as the consistency of the disease names among the validators, and validity was evaluated using the concordance rate of the disease names with the reference disease names. ResultsKrippendorff's α was 0.378 among all validators, 0.370 among prosthodontic specialists, and 0.401 among dental hospital residents. Krippendorff's α for 10 validators (3 specialists and 7 residents) with higher concordance rates was 0.524. Two validators (1 specialist and 1 resident) with the highest concordance rates had a Krippendorff's α of 0.648. Common disease names had higher concordance rates, while uncommon disease names showed lower concordance rates. These rates did not show correlation with clinical experience of the validator or time taken to devise the disease name. ConclusionsHigh reliability was not found among all validators; however, validators with higher concordance rates showed better reliability. Furthermore, common disease names had higher concordance rates. These findings indicate that the new DNS for prosthodontic dentistry exhibits clinically acceptable reliability and validity.

Follow me

Nursery WorldVol. 2015, No. 13 PracticeFollow meMarianne SargentMarianne SargentSearch for more papers by this authorMarianne SargentPublished Online:6 Jul 2015https://doi.org/10.12968/nuwa.2015.13.29AboutSectionsView articleView Full TextPDF/EPUB ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareShare onFacebookTwitterLinked InEmail View articleAbstractA setting rescued from closure by parents is providing outstanding provision with creative and critical thinking at the heart of its practice. Marianne Sargent explains FiguresReferencesRelatedDetailsCited byNosocomial infection control that you should know in the prosthodontic treatment - Recommendation from the industry perspective -Annals of Japan Prosthodontic Society, Vol. 11, No. 2 29 June 2015Volume 2015Issue 13ISSN (print): 0029-6422ISSN (online): 2059-9358 Metrics History Published online 6 July 2015 Published in print 29 June 2015 Information© MA Education LimitedPDF download

Frequency of Obstructive Sleep Apnea Syndrome in Dental Patients with Tooth Wear

To estimate the frequency of obstructive sleep apnea syndrome (OSAS) in dental patients with tooth wear, and to assess the role of dentists in the identification of patients at risk of OSAS. Dental patients with tooth wear and treated with occlusal splint were prospectively recruited to perform sleep study. The severity of tooth wear was established by the treating dentist before patient referral to sleep disorders unit. Sleep questionnaires, anthropometric measurements, and validated respiratory polygraphy were performed. All patients with dental wear were offered a sleepiness analysis. Of 31 recruited patients, 30 (77% males) participated in this study. Patients' mean age was 58.5 ± 10.7 years (range: 35-90 years) and the body mass index was 27.9 ± 3.4 kg/m(2). Tooth wear was mild in 13 patients, moderate in 8 and severe in 9. The mean apnea-hypopnea index (AHI) was 32.4 ± 24.9. AHI < 5 was reported in 2 patients, AHI of 5-29 in 17, and AHI ≥ 30 in 11. A statistically significant association was found between AHI severity and tooth wear severity (Spearman R = 0.505; p = 0.004). Tooth wear could be a tool to identify those patients at risk of having OSAS. This highlights the importance of dental professionals to identify and refer patients with OSAS.

サルコペニアの予防と改善に寄与する補綴歯科を目指して

サルコペニアの予防と改善に寄与する補綴歯科を目指して

The current status of prosthodontic specialists in Japan—The Japan Prosthodontic Society has played an important role in certification of prosthodontic specialists

A board certification system for prosthodontic specialists was established in 2005 by the Japan Prosthodontic Society (JPS), significantly later than the system established by the American Board of Prosthodontics in 1947. The purpose of this study is to outline the certification system for prosthodontic specialists in Japan and discuss and evaluate its current status. In 2012, the number of board certified prosthodontic specialists was 1150 and that of mentorial specialists was 693. The number of board certified institutions was 78 and that of certified adjunct institutions was 23. Although the history of the certification system is not very long, we conclude that a well-organized system has been developed. In addition, prosthodontic departments of dental schools also play an important role in the certification system for prosthodontic specialists.

理事長就任にあたって

理事長就任にあたって

A multi-centered epidemiological study evaluating the reliability of the treatment difficulty indices developed by the Japan Prosthodontic Society

BackgroundThe diagnostic assessment of the level of difficulty in treating patients who need prosthodontic care is useful to establish a medico-economically efficient system with primary care dentists and prosthodontic specialists. Materials and methodsA multi-axis assessment protocol was established using the newly established treatment difficulty indices. The protocol contains Axis I: oral physiological conditions (e.g., teeth damage and/or missing teeth); Axis II: general health and sociological conditions (e.g., medical disorders); Axis III: oral health-related quality of life (OHRQOL; e.g., oral health impact profile: OHIP); and Axis IV: psychological health (e.g., mood, anxiety, somatoform disorders). A preliminary study on the test–retest consistency of the protocol was conducted to check the levels of reliability of the indices prior to a large-scale, multi-center cohort study on the validity of the protocol. ResultsThe test–retest consistency in terms of the oral physiological condition (Axis I) after data reduction was 0.63 for patients with teeth problems, 0.95 for partially edentulous patients, and 0.62 for edentulous patients. The reliability for general health and sociological conditions (Axis II), OHRQOL (Axis III), and psychological health (Axis IV) were 0.88, 0.74, and 0.61, respectively. These values reflect either “sufficient agreement” or “excellent agreement” in accordance with the criteria established by Landis and Koch (1977) [1]. ConclusionThis protocol is the first multi-axis assessment scheme introduced for prosthodontic treatment with sufficient reliability. This new system is therefore expected to have a significant impact on future dental diagnostic nomenclature systems.

Basic position of the Japan Prosthodontic Society with respect to the policy statement on TMD by the American Association for Dental Research (AADR)

Basic position of the Japan Prosthodontic Society with respect to the policy statement on TMD by the American Association for Dental Research (AADR)

Research projects on jaw function and occlusion published in 2008 by members of the Japan Prosthodontic Society: A review

This article reviews the findings of 5 original papers in the areas of jaw function published in the Journal of the Japan Prosthodontic Society (J Japan Prosthodontic Soc; Nippon Hotetsu Shika Gakkai Zasshi in Medline/PubMed; issued in Volume 52, 2008). A variety of subjects in relation to body movement associated with mandibular movement, parameters for mandibular movement analysis, system evaluation for a new jaw tracking device and obstructive sleep apnea were examined in the listed articles.

院内感染予防と口腔ケアの重要性

The current foundation of preventing nosocomial infection in dental settings are “Guidelines for infection control in dental health-care settings” announced in 2003 by Centers for Disease Control and Prevention (CDC). These guidelines employ a concept of standard precaution in clinical dentistry, and had a great influence on “Guideline for infection control in dental prosthetics” established in 2007 by Japan Prosthodontic Society and “Guideline for infection control in dentistry” announced by the dental division of the infection control conference of the national university hospitals in 2008. On the other hand, there have been many reports about oral care, for instance, ‘1) oral care prevents aspiration-related pneumonia', ‘2) oral care decreases the onset rate of the influenza to a one-tenth, (oral care decreases significantly neuraminidase and protease which bacteria produce) ', ‘3) oral care reduces a side effect in the oral cavity by the chemoradiotherapy', ‘4) oral care prevents ventilator-associated pneumonia in ICU', ‘5) oral care is useful for symptom relief in terminal illness', and an importance of oral care has been widely noticed in late years.

Research projects related to complete dentures published in 2008 by members of the Japan Prosthodontic Society

This article reviews the findings of the original papers related to complete dentures published in the Journal of the Japan Prosthodontic Society (Nippon Hotetsu Shika Gakkai Zasshi), Vol. 52, 2008. A total of six articles focused on complete dentures or materials related to complete dentures were selected and summarized. A variety of subjects in relation to removable prosthodontics were discussed in the articles, including denture plaque control, resilient denture lining materials or denture adhesives, and assessment and/or anatomical analysis of prognosis of complete dentures.