Typical cases

Male, 30-year-old crown fracture 10 years ago had the line of disposable plastic crown after the fold due to the labial root, remove the original post crown, and pull the piece of labial teeth. Check: labial root oblique fold subgingival 4 mm, no loosening of teeth, front teeth deep overbite. X-rays showed normal root length and periodontal, has been in the RCT. Recommendation: Porcelain crown after. Disposal: Gingivectomy to the defect surface is revealed, the practice of root canal abutment preparation, casting crown pile in the basement, porcelain, try them, and zinc Ting cements. Repair the abutment crown border and the opposite side of the same name as teeth and adjacent teeth, the patient Heart, labial tooth structure is relatively thin, due to lower occlusal and Zhu Huanzhe Do not bite hard food. Before the repair is completed, to be cover up with gutta labial defect.

Discuss

Gingival defect or shrink the patients, because of the clinical crown length, affect the appearance. Thus, repair, pay attention to the crown and the crowns of adjacent coordination, the use of gingival color porcelain can deal with this problem. Clinical crown lengths, arm length, thus, the abutment preparation to eliminate the thin wall, increasing the length of the dowel pins, adjust the bite.

Gingival defect in patients with periodontal more dental equipment or less disorder, very detrimental to the repair. Thus, before the repair to completely cure periodontal disease, and to teach patients to maintain oral hygiene approach, so that the abutment teeth gums well-being, color co-ordination with the adjacent teeth. Red, swollen gums must be clear and the boundaries of gingival porcelain, not real ones. Gingival porcelain with patient’s gingival edge and tooth structure to seal, lubrication, natural transition, can not constitute an overhang, to stimulate the gums.

Gingival porcelain is slightly prominent in the crown porcelain manufacturing to pay attention to the smooth continuation between the two not rugged indefinite, or Early childhood prone to dental caries the existence of sharp edges burrs, incurring the premises staining or food retention.