Can Abutment with Novel Superlattice CrN/NbN Coatings Influence Peri-Implant Tissue Health and Implant Survival Rate Compared to Machined Abutment? 6-Month Results from a Multi-Center Split-Mouth Randomized Control Trial

Abstract

Background: The aim of the present multi-center split-mouth randomized control trial was to investigate the effect on peri-implant tissue of abutment with chromium nitride/ niobium nitride (CrN/NbN) coatings (super-latex) compared to traditional machined surface. Methods: Two adjacent posterior implants were inserted in 20 patients. A machined abutment was randomly screwed on either the mesial or distal implant, while a super-latex abutment was screwed on the other one. Implant survival rate, peri-implant probing depth (PPD), plaque index (PI), and bleeding index (BI) were collected 6 months after surgery, while marginal bone loss (MBL) was evaluated at T0 and T6.; Results: Implant survival rate was 97.7%. A total MBL of 0.77 ± 0.50 mm was recorded for super-latex abutments, while a mean MBL of 0.79 ± 0.40 mm was recorded for the abutment with machined surface. A mean PPD of 1.3 ± 0.23 mm was recorded for the super-latex Group, and a mean PPD of 1.31 ± 0.3 was recorded for the machined surface Group. PI was of 0.55 ± 0.51 for super-latex Group and 0.57 ± 0.50 for machined Group, while BI was of 0.47 ± 0.49 for super-latex Group and of 0.46 ± 0.40 for the machined one. No statistically significant difference was highlighted between the two Groups (p > 0.05). Conclusions: After a 6-month observational period, no statistically significant differences were highlighted between super-latex abutment and traditional machined abutment. Further in vitro studies as well as clinical research with longer follow-ups are required to better investigate the surface properties of the novel abutments’ super-latex coating and its effect on the oral tissues.

Influence of Surface Characteristics of TiO2 Coatings on the Response of Gingival Cells: A Systematic Review of In Vitro Studies

“…Establishing a proper soft tissue bond between the implant abutments and the surrounding soft tissue is essential for successful dental implants [ 22 ]. This soft tissue seal around the implant abutment protects the tissue-implant interface from bacterial invasion, which may lead to clinical complications and eventually result in implant loss [ 42 ]. It is well-known that the interaction of the implant abutment surfaces with soft tissue is guided mainly by its surface properties, such as surface wettability, surface chemistry and roughness, which have been considered significant factors that affect soft tissue health and stability [ 3 , 22 ].…”

Rehabilitation with implant‐supported overdentures in preteens patients with ectodermal dysplasia: A cohort study

“…Moreover, the Seeger rings reduce the stress on the screws during the masticatory cycles, reducing the possibility of screw loosening/fracture 28–30 . In our study, we used a low‐profile attachment (OT Equator) that has a smaller volume than a conventional MUA and is coated with titanium nitride for an improved biocompatibility with soft tissues 31,32 …”

“…[28][29][30] In our study, we used a low-profile attachment (OT Equator) that has a smaller volume than a conventional MUA and is coated with titanium nitride for an improved biocompatibility with soft tissues. 31,32 Another factor that is worth of consideration in terms of implant prosthetic success was the sliding bar, able to anchor the overdenture and to follow the mandibular transverse growth or bone deformation during chewing or mouth opening and closure. [33][34][35] Our decision to proceed with a sliding bar was based on the fact that the mandible was extremely thin in these patients and possibly subjected to deformation during functioning.…”

Biomaterials science and surface engineering strategies for dental peri-implantitis management

“…Considering the intrinsic mechanical properties, desired biocompatibility, and biological activity, nitride ceramics can be regarded as novel biomaterials for dental implant applications [ 203 , 204 ]. Examples include silicon nitride as the implant or prosthetic crown [ 205 , 206 ]; chromium nitride and niobium nitrides abutment coating [ 204 ]; TiN and tantalum nitride coatings for dental implant [ 202 , 207 , 208 ]. Among these, TiN, which has been widely studied for decades, is the most commonly used material for making protective coatings for dental implants.…”