The aim of this study was to measure marginal fit at cylinder-abutment interface, before and after overcasting procedure. A hexagonal implant was fixed to a stainless steel base and a Estheticone-like abutment used during all the experiment. Before casting procedure, gold (Group I) and Ni-Cr-Be (Group II) premachined cylinders were tightened to the abutment with gold and titanium screws (in bot...

Among various challenges to restore a single tooth implant in the posterior region of the oral cavity is the creation of harmonious gingival contour beneath the restoration and near the abutment –gingiva interface so as not to allow plaque accumulation within this inaccessible zone. Deficiencies in the soft or hard tissue in the edentulous space are usually the most common obstacles to achieve ...

Background and Aim: The mismatch of the implant-abutment connection can produce instant stress and microleakage which result in mechanical and biological complications. This study aimed to investigate the influence of GapSeal® as a sealing material on the extent of microgap and microleakage at the external hexagon implant platform following cyclic loading. Materials and Methods: Sixteen implan...

PURPOSE This study evaluated the reliability and failure modes of anterior implants with internal-hexagon (IH), external-hexagon (EH), or Morse taper (MT) implant-abutment interface designs. The postulated hypothesis was that the different implant-abutment connections would result in different reliability and failure modes when subjected to step-stress accelerated life testing (SSALT) in water....

OBJECTIVES The habitual consumption of extremely hot foods and beverages may affect implant treatment modality. Our objectives were to: (i) establish the maximum temperature produced intra-orally while consuming very hot substances and (ii) use these values in an ex vivo model to assess the temperature changes along the implant-bone interface. MATERIALS AND METHODS Temperatures were measured ...

OBJECTIVES The aim of this study was to determine and compare the frequency of bacterial leakage of Streptococcus sanguinis biotype II along the implant-abutment interface between two systems of morse taper dental implants. Different methods of activation of the taper abutments were used: tapped-in (Bicon) and screwed-in (Ankylos). MATERIALS AND METHODS Twenty sterile assemblies were used and...

OBJECTIVES Microbial leakage through the implant-abutment (I-A) interface results in bacterial colonization in two-piece implants. The aim of this study was to compare microleakage rates in three types of Replace abutments namely Snappy, GoldAdapt, and customized ceramic using radiotracing. MATERIALS AND METHODS Three groups, one for each abutment type, of five implants and one positive and o...

Nowadays the problem of optimal restorative prosthetics on dental implants is paramount importance for solving a number clinically difficult cases and extends beyond alternative treatment at complete partial adentia both upper lower jaws. An essential factor here understanding biomechanical behaviour implant-abutment interface, because an interface simulates biophysical natural teeth ensures lo...