Scientifica implantology

The International Journal of Oral and Maxillofacial Implants, 24:920-926, 2009

This study compared the behaviour of crestal bone at 24 months around Outlink² implants (external hexagonal connection), rehabilitated with traditional prosthetic protocol, and around platform switched Ankylos implants (conometric connection). The survival of the implants was 100% and bone reabsorption did not present statistically signifi cant differences in the two cases.

Clinical Oral Implant Research, 20(9):873-874, 2009

This study evaluated the correlation between crestal bone remodelling and the presence of metalloproteinase in the peri-implant sulcus in rehabilitated sites with different fixture/abutment mismatching. The width of the mismatching infl uences the extent of the crestal bone reabsorption in inversely proportional terms, but it does not affect the metalloproteinase.

International Journal of Prosthodontics, 22 (3):277-282, 2009

22 implants were placed immediately into fresh extraction sockets in the maxilla; 11 cases were treated with conventional prosthetic protocol and 11 with the Platform Switching technique. It was highlighted how this latter provides greater stability of the crestal module.

Clinical Oral Implant Research, 20 (4):414?420, 2009

This clinical study highlights that the rehabilitation of implants according to the switching platform concept allows better stability of the hard and soft tissues around the implant compared to rehabilitation with abutments of the same diameter.

Italian Dental Journal, 2012; 08: 24

SURGICAL AND PROSTHETIC SWITCHING PLATFORM

One of the primary objectives of modern implantology is to maintain the crestal bone, so as to improve the aesthetic result and reduce the risk of late peri-implantitis. In comparison with traditionally designed implants, switching platform implants reduce early crestal bone loss in proportion to the size of the switch.
Switching platform implants are divided into two groups: implants with surgical switching (implants with a specially widened neck) and implants with prosthetic switching (implants with a standard neck with prosthetic posts having a reduced diameter). Both types of switching have proved to be effective and, in order to maximize the obtainable switch, for some years we have been using a switching platform protocol which combines the use of implants with surgical switching (Sweden & Martina Premium 3.80 SP implants) prosthesized with posts with a reduced diameter (posts for Premium 3.30). The combination of surgical and prosthetic switching has proved to be a valid and predictable protocol for minimizing crestal bone loss.
The clinical case illustrated below concerns the insertion of a single immediate post-extraction implant with immediate loading. Prosthetization was carried out according to the protocol described above.

Clinical Oral Implant Research, 21:115-121, 2010

This study on 80 implants, divided into four groups and rehabilitated with fixture/abutment mismatching increasing from 0 trough 0.85 mm, established an inverse relationship between the extension of the Platform Switching and the dimensional loss of the coronal bone, connecting this data to the horizontal repositioning of the biological width, and to a different stress distribution on the peri-implant bone.

Dental Cadmos, 77(9): 31-39, 2009

Two groups of 20 patients received single implant in an edentulous site, which was rehabilitated in a second surgical procedure with a standard abutment (control group) and with the Switching Platform technique (test group). One year after the loading of the prosthesis, the test group showed a significantly lower loss of crestal bone compared to the control group.

Journal of Periodontology, 81 (10):1350-1366, 2010

The authors conducted an extensive review of the literature relating to Platform Switching techniques and their respective results. They analysed 10 studies involving 1,239 implants; of these, three studies involved Global and Outlink² implants. A metanalysis of the data showed that the Switching Platform technique is on the average capable of preserving the bone height and the levels of soft tissue around the implant.

Italian Dental Journal, 4: 16, 2010

CLINICAL CASE: AGENESIS OF UPPER RIGHT LATERAL INCISOR

Unlike oligodontia and hypodontia, which are rare, usually related to serious genetic pathologies, single agenesis (i.e. no mono or bilateral dental morphology) is frequent, and has increased exponentially over the last 50 years, connected most likely to the adaptive phenomena of human species. The teeth most frequently affected by this agenetic condition are the upper lateral incisors, therefore, the clinical case studied by Dr Canullo is very important because it can form a valid reference for dentists who have to deal with the diffi cult prosthetic rehabilitation of these patients. In particular, the report briefly illustrates the immediate provisional technique of one abutment - one time and the roll-fl ap technique of treating soft tissues. This clinical case, supports, with results at 2 years, the validity of platform switching, even in the presence of a slight mismatching such as the one between the 4.3 mm platform of a Kohno implant (diameter of 3.80) and the relative abutment of 3.8 mm, and also clarifies the  aesthetic benefi ts of less bone reabsorption around the implant.

Canullo L, Iannello G, Netuschil L, Jepsen S.

Based on the results of a previous study, which showed how greater implant/abutment mismatching in switching platform techniques positively influenced the maintenance of the bone crests around the implants, the authors used MMP-8 markers to verify that the mismatching differences did not alter the inflammatory response of soft tissues.