USE OF VOLUME-STABLE COLLAGEN MATRIX FOR SOFT TISSUE AUGMENTATION AT TEETH AND DENTAL IMPLANTS SITE.

The aim of this clinical report is to demonstrate the capabilities and the results of a porcine collagen matrix application to increase the soft tissue volume in the area of placed implant at 3.1 site and of implant-supported cantilever prosthesis at 3.2 site. The material of the study was a clinical case of the 35-year-old patient with a diagnosis gingival recession and lateral resorption of the tooth root 3.2. It is known from the anamnesis that 2 years ago an injury was received in this area. The first stage was resection of this tooth and its replantation in order to preserve the parameters of the bone and gingiva. After the bone healing, teeth 3.1, 3.2 were removed, an implant was installed in the area of the missing tooth 3.1, bone and soft tissue augmentation in this area were performed. 3 months after the operation, a crown was installed on the implant 3.1 and a cantilever structure in the area 3.2. 12 months after the operation and prosthetics, no mucosal inflammation or apical migration of the gingival margin were found. The thickness of the gingiva in the area of the installed implant is 2.5 mm, which is 1.5 mm more than the initial thickness of the gum. Teeth can be used as a biological matrix to prevent bone atrophy; in order to prevent soft tissue atrophy and bone resorption, providing an inflammation absence, dental implantation should be combined with soft tissue augmentation; use of volume-stable collagen membrane combined with soft tissue graft provides significant increase of soft tissues (gingival increase by 1.5mm at implant site); long-term use of implant-supported cantilever construction at lower jaw incisors site does not lead to gingival recession as long as sufficient bone and soft tissue volume is provided.