Marginal Bone Loss Compared in Internal and External Implant Connections: Retrospective Clinical Study at 6-Years Follow-Up

Abstract

The aim of this study was to assess and compare the marginal bone loss between two different categories of implants (Winsix, Biosafin, Ancona, Italy) having the same diameter and belonging to the Torque Type® (TT®) line, in the internal hexagon version (TTi, Group A) and in the external hexagon configuration (TTx, Group B). Patients with one or more straight implants (insertion parallel to the occlusal plane) in the molar and premolar regions in association with tooth extraction at least 4 months prior to implant insertion, who have a fixture diameter of 3.8 mm, who followed up for at least 6 years, and whose radiographic records were available were enrolled in this study. Depending on implant connections (externally or internally), the sample was divided into groups A and B. For externally connected implants (66), the marginal resorption was 1.1 ± 0.17 mm. The subgroup of single and bridge implants showed no statistically significant differences with a marginal bone resorption of 1.07 ± 0.15 mm and 1.1 ± 0.17 mm, respectively. Internally connected implants (69) showed an overall marginal resorption of 0.91 ± 0.17 mm, while the subgroup of single and bridge implants showed resorption of 0.90 ± 0.19 mm and 0.90 ± 0.17 mm, respectively, with no statistically significant differences. According to the obtained results, internally connected implants showed less marginal bone resorption than externally connected implants.

Green Ultrasound-Assisted Synthesis of Surface-Decorated Nanoparticles of Fe3O4 with Au and Ag: Study of the Antifungal and Antibacterial Activity

“…Likewise, these types of nanostructures could be used in dental implants whenever biocompatibility tests are carried out. The high antibacterial and antifungal activity observed by these systems (Fe 3 O 4 -Au and Fe 3 O 4 -Ag) offer the possibility to be employed as nanocarriers of drugs in dental applications [ 56 , 57 , 58 , 59 ].…”

Conservative and cost‐effective rehabilitation of a deep bite patient with worn dentition: A case report of the Dahl technique approach

“… 21 In addition, compared to externally attached implants, internally connected implants demonstrated decreased marginal bone loss. 22 …”

Thermodynamic Consideration of the Solid Saponin Extract Drop–Air System

“…The values of maximal Gibbs surface excess concentration (Γ max ) calculated for PTFE, PMMA and glass from the Gibbs isotherm equation, as well as applied in Equation (7). The values of the standard Gibbs free energy of adsorption (∆G 0 ads ) calculated from the modified Langmuir equation and Equation (8). The determination of the extract fraction excess concentration at the PMMA,L and G-L interfaces is more complex than that at the PTFE,L interface.…”

“…In recent years, there has been great interest in the use of naturally occurring compounds used in oral hygiene products, and for their inclusion into traditional therapeutic and orthodontic procedures. Saponins are characterized by their anti-inflammatory, antibacterial, antiviral, protozoal and antifungal properties, and can be also used as additional agents in the dental implantology [ 7 , 8 ]. Studies have also proved that extracts containing saponins have a suppressive impact on bacteria such as S. mutants [ 9 ].…”