Abstract Background: Low Back Pain (LBP) is most common symptom among dentists due to working in a standing position and prolonged stooping over a reclined or supine patients which lead to trigger points formation at lower back. Aims of Study: Localized most common level of trigger point formation among dentists at lumbosacral area and identified the possible risk factors for the development of trigger points by Algometer which eased for physical therapist to find trigger point easily and save time and effort for treatment. Subjects and Methods: This study was carried out on fifty dentists males with low back pain and their ages were ranged from 30 to 45 years, dentists have recurrent episode of pain at lower back and all dentists worked daily at hospital or in thier private clinics examinated from El-Yom El-Wahed and El-Hayaa El-Arabya Hospitals in Maadi District, Cairo Governorate. Results: L5 level was the common site of trigger points at lower back detected in 15 (48.3%) subjects followed by S1 level in 7 (22.5%) subjects and S2 level in 7 (22.5%) subjects and Trigger points at lower back was detected in L4 level in 2 (6.7%) subjects 19. Conclusion: L5 level was the common site of trigger point formation at lower back among dentists.