Blackground: under physiological conditions, teeth are stabilized in the dental arch by making occlusal contacts with opposing teeth and proximal contacts with adjacent teeth. A weak or slightly open proximal tooth contact would permit food impaction, one of the etiology of periodontal disease. The common therapy is to make a permanent restoration using composite restoratioan having regard to proximal contacts, occlusal contour, and facial and lingual contaour to protect periodontal tissues. Objective: to show that it is important to restore contacts points in maintaining periodontal tissues using composite restoration. Case: on the first case, we found caries on the distal site of 2.4 and 3.5 and mesial site of 2.8 on the second case, and open contacts, resulting a periodontal pocket. Therapy: the initial treatment are scaling and root planning and curretage. Composite restoration to restore proximal contact points using matrix band and wedge. Maladaptation of either the matrix band or the wedge result in clinical failure such as overhanging margins, faulty contouring of the proximal wall and inadequate contact points. To select a correct wedge, four variables should lie considered the convergence angle of the base, the mesiodistal width of the base, the gingivo-occlusal height of the transverse section and the concavity of the side walls. Conclusion: Clinically, there are reduction in pocket depth after the restoration, but radiograpgically, there are no significant result in three months.