Tooth loss due to chronic periodontitis linked to overactive bladder: Study
It has been recently found out that overactive bladder was correlated with the tooth loss and systemic, chronic inflammation.
The study was presented at the International Continence Society`s online meeting.
Metabolic syndrome/lifestyle diseases such as hypertension, diabetes mellitus and obesity are associated with overactive bladder (oab) and other lower urinary tract symptoms (luts). Chronic periodontitis, the leading cause of tooth loss in the elderly, is also associated with metabolic syndrome/lifestyle diseases. However, few studies have examined the relationship between tooth loss/chronic periodontitis and luts/oab.
Hence, Tomohiro Matsuo from the Department of Urology and Renal transplantation, Nagasaki University Hospital, Nagasaki, Japan conducted this study to determine the relationship between luts/oab and tooth loss.
The author assessed individuals aged >40 years who had not been treated for luts, and who had lost teeth due to chronic periodontitis. A total of 232 participants (oab group: n=103, non-oab group: n=129) were enrolled.
Participants were divided into two groups: the oab group and non-oab group according to the overactive bladder symptom score (oabss). Individuals with tooth loss from dental caries or external trauma, luts due to neurological disease, and males with a prostate size >30g were excluded.
Oab was defined as a score ≥2 on oabss item q3 (urgency) and a total score ≥3. Multivariate analysis was conducted to assess the relationship between the number of lost teeth and symptoms of luts/oab. All participants provided written informed consent.
The following results were observed-
A. The number of remaining teeth was 12.8±8.8 and 21.5±8.5 in the oab group and non-oab group, respectively (p<0.001).
B. There was a statistically significant inverse association between the number of remaining teeth and each of the oabss items and the total oabss (daytime frequency: r=-0.416, p<0.001; nighttime frequency: r=-0.525, p<0.001; urinary urgency: r=-0.474, p<0.001; urgency incontinence: r=-0.290, p<0.001; total oabss: r=-0.572, p<0.001).
C. The number of remaining teeth was also significantly associated with the voided volume (r=0.303, p<0.001), and maximum flow rate (r=0.219, p<0.001), but was not significantly associated with residual urine volume (r=-0.125, p=0.06).
D. There was a significant inverse association between the number of remaining teeth and serum c-reactive protein (crp) level (r=-0.264, p<0.001).
E. With the exception of urgency incontinence, serum crp level was significantly associated with each oabss item and the total oabss (daytime frequency: r=0.152, p=0.02; nighttime frequency: r=0.247, p<0.001; urinary urgency: r=0.262, p<0.001; urgency incontinence: r=0.115, p=0.08; total oabss: r=0.270, p<0.001).
F. Multivariate analysis revealed that the number of lost teeth was an independent risk factor for oab.
Therefore, it was concluded that "there is a relationship between the number of remaining teeth and luts including oab."
Overactive bladder was correlated with the tooth loss and systemic, chronic inflammation. In addition, the severity of oab was correlated with the tooth loss; thus future studies should focus on the utility of oral care as a means to prevent oab.
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