Kissing as a protective factor against decreased salivary pH. A randomized controlled trial (Preprint)

Abstract

BACKGROUND Kissing is a common social behavior that may influence physiological responses and impact oral health. Prior research has shown that affectionate behaviors like kissing can reduce stress and improve relationship satisfaction. However, the effects of kissing on salivary pH, particularly after consuming sugary or fermented drinks, have not been thoroughly investigated. This study aims to explore whether kissing can neutralize the acidic pH of saliva caused by such beverages. OBJECTIVE To determine the effect of kissing on salivary pH following the consumption of sugary or fermented drinks. METHODS A randomized controlled trial (RCT) was conducted with 60 couples aged 18-30. Participants were divided into three groups: a control group (no kissing), an experimental group where one partner consumed a drink, and another experimental group where both partners consumed a drink. The study measured salivary pH at baseline, after drink consumption, and following a 40-second kiss or a control period, with measurements taken every 5 minutes until pH returned to neutral levels. Data were analyzed using SPSS software, employing t-tests, ANOVA, and other relevant statistical methods. RESULTS The study is ongoing, with preliminary data expected in November 2024. Initial recruitment indicates sufficient interest from the target population. CONCLUSIONS This study will provide insights into the relationship between kissing, salivary pH, and oral health, potentially offering new strategies for dental caries prevention. The results may challenge existing assumptions about the role of kissing in maintaining oral hygiene. Further research will be needed to confirm these findings. CLINICALTRIAL ClinicalTrials.gov NCT06501729