The pain that occurs as a result of dentists' poor posture and working in narrow spaces is thought to be muscle-oriented. It is argued that these posture-related pains cause reflected pain in different localizations depending on the area where the muscle attaches. This study demonstrated the effectiveness of dry needling on the M. Trapezius muscle in dentists with head and neck pain. Dry needling comes in various diameters and lengths and is applied intramuscularly to eliminate the existing trigger point. A total of 60 dentists participated in the study, the average age was 28.65±3.07 years, there was no disease in their CV and family history, 69.23% smoked 1 pack of cigarettes a day, 50.0% consumed 1 glass of alcohol a day, 15% It was determined that 38 of them received regular medication and the average duration of the history was 8.54±3.62 years. The average age of the participants in the control group was 28.23±2.10 years, they had no disease in their personal and family history, 73.08% smoked 1 pack of cigarettes a day, 46.15% consumed 1 glass of alcohol a day, 11.54% It was determined that he exercised regularly and the average duration of his history was 5.69±3.25 years. It was determined that there was a statistically significant difference between the story times of the participants in the treatment and control groups and that the story time of the participants in the treatment group was higher (p<0.05). It was determined that there was no statistically significant difference between other socio-demographic characteristics of the participants according to their groups (p>0.05). As a result, a statistically significant difference was found in the effectiveness of dry needling in the control and treatment group participants in the study. Anthropometric measurements, algometer, P4, thermal camera.