Combined orthodontic-periodontal treatment with supracrestal fiberotomy was undergone on the periodontal patients with anterior displacement of incisors. Evaluate of the changes before and after treatment. Periodontal indices, periapical x-ray analysis, and model analysis were used for investigating the changes of alveolar bone height and periodontal health by orthodontic treatment following supracrestal fiberotomy of anterior displaced incisors on periodontal patients. Alveolar bone height was increase by 1.2 mm in fiberotomy patients. The overjet was reduced from 7.0 mm to 2.0 mm, while the overbite was decreased from 4.0 mm to 2.0 mm, and the periodontal health maintained as well. Combined orthodontic periodontal treatment with supracrestal fiberotomy could correct the malpositioned teeth, and improve the periodontium conditions and gain the crest bone.