Risk factors for tooth loss in adult Japanese dental patients: 8020 Promotion Foundation Study

Saito, Mizuki; Shimazaki, Yoshihiro; Fukai, Kakuhiro; Furuta, Michiko; Aida, Jun; Andō, Yasuhiko; Miyazaki, Hideo; Kambara, Masaki

doi:10.1111/jicd.12392

Cited by 21 publications

(22 citation statements)

References 33 publications

(33 reference statements)

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“…TL reportedly increases with age, and our results were similar. 42,43 The number of RT at BL was also significantly different between 28-24 and 23-20 RT and between 28-24 and ≤19 RT, but not between 23-20 and ≤19 RT (P = 0.99). These findings suggest that TL was less likely to occur if the number of RT at BL was ≥24 than ≤23.…”

Section: Discussionmentioning

confidence: 93%

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Tooth loss in patients undergoing long-term maintenance at a private dental clinic in Japan: A retrospective study

Kawahara¹,

Inoue²,

Okura³

et al. 2020

Preprint

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Background: Tooth loss is generally considered the final outcome of oral disease. This retrospective study was performed to identify risk factors for tooth loss in patients undergoing long-term maintenance therapy. Methods: We surveyed 1145 adult patients who underwent maintenance therapy for ≥5 years after they had undergone active treatment from January 2015 to December 2016 and established a baseline status. The study variables were patient compliance, sex, number of teeth lost, cause of tooth loss, age at start of maintenance, number of remaining teeth at start of maintenance, duration of maintenance, smoking status, use of salivary secretion inhibitors, and diabetes mellitus. Additionally, 57 patients who did not undergo maintenance therapy were surveyed to examine and compare the effects of maintenance therapy. Statistical analyses were performed to assess the correlation of each variable with tooth loss. Results: The average number of teeth lost under maintenance therapy was 0.07/year. Significantly fewer teeth were lost in the maintenance than non-maintenance group. Most of the teeth lost were non-vital teeth, and the most common cause of tooth loss was tooth fracture. Patient age, number of remaining teeth at start of maintenance, use of salivary secretion inhibitors, and diabetes mellitus were related to tooth loss. Conclusions: To the best of our knowledge, this is first large-scale study of tooth loss in patients undergoing long-term maintenance therapy within a general dental clinic. Our findings demonstrate that starting maintenance therapy when patients are younger and possess more teeth may prevent future tooth loss.

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Section: Discussionmentioning

confidence: 93%

“…Several studies have revealed significant loss of denture abutments. [42][43][44] Another explanation may be that patients with a low number of RT have received more restorative prosthetic treatment in the past and have more non-vital teeth. Some reports have also described significant loss of non-vital teeth.…”

Section: Discussionmentioning

confidence: 99%

Tooth loss in patients undergoing long-term maintenance at a private dental clinic in Japan: A retrospective study

Kawahara¹,

Inoue²,

Okura³

et al. 2020

Preprint

View full text Add to dashboard Cite

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“…There are too many factors affect a M2's life span [6,19], that's why to date there is no direct evidence revealing the relationship of M2 loss with their neighboring M3s. It's generally believed that the negative effect of M3s mainly occurred in the distal M2s [9,13,20], thus the prevalence of M2 loss due to diseases in the distal surface may reflect the influence of M3s on the adjacent M2s.…”

Section: Discussionmentioning

confidence: 99%

“…Similar to other teeth, many factors may affect a M2's life span, such as oral hygiene, occlusal condition, trauma, smoking, etc. [6]. Among the various risk factors to M2 pathology, the presence of its neighboring M3s has attracted increasing attention [7,8,9].…”

Section: Introductionmentioning

confidence: 99%

Loss of 908 Second Molars in Chinese adults: Consequences of the Presence of Their Neighboring Third Molars?

Sun¹,

Tian²,

Qu³

et al. 2020

Preprint

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Background Many studies have reported that the presence of third molars (M3s) can increase the risk of pathology in neighboring second molars (M2s). However, whether the presence of M3s can effect the mortality of M2s remains unknown. The main aim of this study was to reveal the reasons for M2 loss and how the M2 loss were related to their neighboring M3s. Methods This was a retrospective cross-sectional study. A review of the medical records and radiographic imagines of patients who had their M2(s) removed was undertaken to analyze the reasons for tooth extraction and how those reasons were related to the presence of M3s situated adjacent to the removed M2s. Results Clinical material (from January to March 2019) of 800 patients met the inclusion criteria were involved into this study. M2s in 908 quadrants (i.e. 908 M2s) were removed from these enrolled patients, wherein 382 quadrants were with the absence of M3s and the other 526 quadrants were with the presence of M3s. The average age of patients whose missing M2s had or had no neighboring M3s was 52.4 ± 14.8 years and 56.7 ± 14.9 years respectively (Mann-Whitney U test, p < 0.001). When the reasons for the 908 extracted M2s were traced, it was found that 433 teeth (47.7%) were removed due to caries and sequelae, while 300 teeth (33.0%) were lost for periodontal diseases. In addition, substantial evidence confirmed that 14.4% of the M2s with adjacent M3s were removed due to diseases mainly in the distal surface which were closely related to their neighboring M3s, and it was much higher than that was identified from removed M2s without adjacent M3s (1.8%). Except for residual roots, 42.2% M3s were removed along with neighboring M2s simultaneously. Conclusions The presence of M3s, no matter impacted or erupted M3s, was associated with an earlier loss of their neighboring M2s.

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“…Many studies have reported the risks of tooth loss [7][8][9]. Since individual-and tooth-level factors are involved in tooth loss, some studies have conducted multilevel analyses to identify the risk of tooth loss [10,11]. Tooth loss is associated with the type of dental visit and the risk of tooth loss was lower in those who had regular dental checkups compared with those who received treatment only [12,13].…”

Section: Introductionmentioning

confidence: 99%

A multilevel analysis of the importance of oral health instructions for preventing tooth loss: The 8020 Promotion Foundation Study of Japanese Dental Patients

et al. 2020

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Background Many studies have reported risk factors for tooth loss. Oral health instruction is considered effective at improving oral health behavior and oral health. However, few studies have examined the relationship of dental clinic factors, such as the number of dental hygienists and implementation of oral health instructions, with tooth loss. Here, we conducted a multilevel analysis to clarify the dental clinic risk factors associated with tooth loss. Methods Baseline surveys were conducted at 1216 dental clinics in 46 prefectures in Japan, and 12,399 dental patients aged 20 years and over underwent oral examinations and completed a questionnaire. The dental clinics also completed a questionnaire at baseline. A 3-year follow-up survey included 2488 patients in 585 dental clinics. Multilevel multivariate logistic regression analysis was used to examine the risk of tooth loss at the patient and clinic levels. Results Of the patient variables, older age, higher mean probing pocket depth, current or past smoking, and bleeding during tooth brushing were associated with higher risks of tooth loss. Individuals with many teeth who visited dental clinics for maintenance were at significantly lower risk of tooth loss. Of the clinic variables, patients attending dental clinics with four or more dental hygienists had a significantly lower risk of tooth loss (OR 0.68, 95% CI 0.50–0.99). Patients attending dental clinics that provide oral health instructions for 20 min or more had a significantly lower risk of tooth loss (OR 0.69, 95% CI 0.50–0.96). Conclusions In addition to individual risk factors for tooth loss, dental clinic factors such as length of oral health instruction and number of dental hygienists are associated with tooth loss. In dental clinics, ensuring sufficient time for dental hygienists to provide oral health instructions can help prevent tooth loss in dental patients.

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Risk factors for tooth loss in adult Japanese dental patients: 8020 Promotion Foundation Study

Cited by 21 publications

References 33 publications

Tooth loss in patients undergoing long-term maintenance at a private dental clinic in Japan: A retrospective study

Tooth loss in patients undergoing long-term maintenance at a private dental clinic in Japan: A retrospective study

Loss of 908 Second Molars in Chinese adults: Consequences of the Presence of Their Neighboring Third Molars?

A multilevel analysis of the importance of oral health instructions for preventing tooth loss: The 8020 Promotion Foundation Study of Japanese Dental Patients

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