This study aimed to elucidate any evidence on adverse events, defined as an unprecedented event which potentially could lead to injury, occurring to child patients during their dental visits. The study was mainly divided into 2 parts: part 1- before treatment and part 2- during treatment. A survey of the dentists who were taking care of child patients was performed using a questionnaire asking their direct experience on any kind of adverse events throughout their working period but within the past 10 years. Percentage and frequencies on their experienced cases of non-treatment related adverse events were described. Association between factors of the respondents and their experiences of cases was assessed by Chi-square and logistic regression. A total of 390 dentists who were taking care of child patients responded to the questionnaire. Those who experienced any kind of adverse events in which child patients got involved before dental treatment at the waiting area was 49.49 % of all respondents (95 % confidence interval (CI), 44.53-54.45), while 39.23 % (95 % CI, 34.38-44.08) of the respondents witnessed adverse events before dental treatment began inside the operatory. A slip and fall injury was the most frequently reported event at the waiting area, whereas wound or cut by sharps was reported highest inside the operatory. No other association between experiences on adverse events outside the operatory room and the dentists’ demographic data was found, whereas pediatric dentists tended to experience more adverse events inside the operatory (odds ratio: 1.57, p=0.032). The study suggests that dentists have experienced a substantial amount of injuries to their child patients at the waiting area, as well as in the operatory room, even before dental treatment begins. Sufficient care and preventive measures should be emphasized from the time child patients are awaiting dental treatment.