To evaluate the dental restorative application of polymer composite filled with hydroxylapatite (HAP), specified dental properties of the polymer composite was investigated. A visible light system was utilized to activate the acrylate resin matrix of composite. Maximum loading percentage of HAP in composite was 65 wt% and the depth of cure value was 6.0 mm which can be applicable for dental restoration. With an increase of the HAP content, degree of conversion value of the polymer composite was slightly decreased, however, polymerization shrinkage value was not varied. Diametral tensile strength value was dramatically enhanced with increasing the HAP content. Anyhow, polymer composite prepared herein have superior mechanical properties enough to apply for dental materials.