Tomoaki Mameno

Peri-implant diseases are known as undesirable conditions that can occur after implant therapy. Although several risk indicators are becoming clear, the causes of peri-implant diseases have not been completely investigated. The purpose of this review was to summarize the prevalence and risk indicators for peri-implant diseases by referring to current papers from various angles. Many studies have reported the varied prevalence of peri-implant mucositis (23.9%-88.0% at the patient level and 9.7%-8

The purpose of this retrospective cohort study was to create a model for predicting the onset of peri-implantitis by using machine learning methods and to clarify interactions between risk indicators. This study evaluated 254 implants, 127 with and 127 without peri-implantitis, from among 1408 implants with at least 4 years in function. Demographic data and parameters known to be risk factors for the development of peri-implantitis were analyzed with three models: logistic regression, support ve

Within the limitations of this longitudinal study on risk indicators for peri-implantitis, age, inadequate plaque control, insertion in the maxilla and less occlusal support of natural teeth correlated with peri-implantitis development.

Within the limits of this study, longer functional time, poor oral hygiene, loss of occlusal support, location in the maxilla, cement-retained superstructure, and less keratinized mucosa should be considered as risk indicators for bone resorption around implants.

Maximal occlusal force was associated with a reduced prevalence of psychological frailty among Japanese community-dwelling older adults participating in our study.

Occlusal force and contact area were significantly associated with dietary hardness as estimated from the masticatory muscle activity using a daily diet questionnaire.

This large population-based cohort study found that well-fitting dentures were associated with lower mortality risk in older adults with reduced posterior occlusal support. Nonusage or poorly fitting dentures were associated with an increased risk of mortality as occlusal support deteriorated.

This large population-based cohort study showed that a decreased POS was a risk indicator for tooth loss; furthermore, the risk increased even further in the anterior teeth region.

There are few studies that have examined the association between oral health, food intake, and cognitive function. This 9-year longitudinal study suggests that it is important to maintain natural teeth to enable the functional means to consume green-yellow vegetables and meat, and thereby help maintain cognitive function.

Oral function showed a significant association with mental health status in community-dwelling older adults. Fruit and vegetable intake along with social interactions mediate this relationship.

After adjustments for confounding factors using PS matching, replacing unilateral free-end missing teeth with FISPs may exhibit a lower tooth loss rate in adjacent and contralateral teeth compared to replacing with RPDs.

Background One of the critical complications in implant treatment is peri-implantitis which demonstrates inflammation of mucosa around implant in combination with progressive bone resorption. However, few studies reported about the incidence and risk factors of peri-implantitis by using a mixed-effects model which makes it possible to assume multiple observations within the same individual. Aim/Hypothesis This study aimed to evaluate the incidence of peri-implantitis and identify potential risk

In patients receiving SPT, history of diabetes, history of periodontitis, jaw position, insufficient KMW, and prosthetic features such as EA and fixation type were associated with MBL.

症例の概要：患者は74歳の女性で，主訴は下顎全部床義歯の動揺による咀嚼困難であった．下顎は無歯顎であり，顎堤は全体的に高度に吸収していた．上顎の残存歯に対する前処置を行った後，診断用義歯として上下顎全部床義歯を製作した．その後，最終義歯として，下顎に2本のインプラントを支台としたオーバーデンチャーを製作した．

医療や介護の現場で日常的に発生する情報を集めた「リアルワールドデータ」は，近年，臨床研究で用いられる機会が多くなっている．本稿では，2017～2021年度に行われた大阪府後期高齢者歯科健診の約25万人分のデータと，国保データベースシステムの医療・介護データを基とした大規模コホート研究から，欠損歯列が欠損の拡大に与える影響について，筆者がこれまでに得た知見を紹介したい．さらに，臼歯部咬合支持と死亡との関連を評価した結果を踏まえ，Eichnerの分類，Cummerの分類，そして宮地の咬合三角といった咬合支持の観点から，欠損歯列が更なる歯の欠損，そして全身へ与える影響について考察する．