Yazar "Ozturk, K." seçeneğine göre listele

Listeleniyor 1 - 2 / 2
  • [ X ]
    Öğe
    Evaluation of color stabilization of peri-implant mucosa in different restorative material, abutment and tissue thickness combinations: an in vitro study
    (Ariesdue Srl, 2022) Kuzu, T. E.; Ozturk, K.; Unlu, D. Gunes
    Aim The aim of this in vitro study is to determine the level of color change of the peri-implant mucosa in several combinations of parameters, including different experimentally-created peri-implant tissue thicknesses, and different prosthetic crown and abutment materials, by spectrophotometric measurements. Materials and methods In this in vitro study, a sheep's head was used because it resembles human mucosa in terms of color and texture. Different experimentally-created peri-implant tissue thicknesseswere determined, i.e. 1,1.5,2 and 3 mm, and to provide these thicknesses 0.5, 1 and 2 mm thick connective tissue grafts were harvested from the palatal mucosa of the sheep's head. These grafts were placed under the mucosal flap and fixed with tissue adhesive. Titanium and zirconia were chosen as abutment materials. Metal-porcelain crowns, zircon crowns and feldspathic porcelain crowns were selected as crown materials. Materials were represented by 5 x 5 x 1 mm blocks made of the same materials. For each study group, two measurements were made using a spectrophotometer. The first measurement determined the color of the flap in different experimentally-created tissue thicknesses, and the second measurement determined the color of the tissue after the prosthetic material and abutment material were placed under these flaps. Statistical comparison of the two measurement values was used to determine the color change. Results Spectrophotometer measurements show that the naked eye could distinguish between all groups when the mucosa thicknesses were 1 and 1.5 mm. When the mucosa thickness was 2 mm, color change was observed in the titanium abutment and prosthesis groups, while color stability was achieved in the zircon abutment and prosthesis groups when the mucosa thickness was 3 mm.Conclusions Within the limits of this study, peri-implant mucosa thickness is an important factor in color stabilization; mucosa thickness must be a minimum of 2 mm to achieve this stabilization.
  • [ X ]
    Öğe
    Evaluation of early bone recovery in grafted jaw with anterior iliac bone: a retrospective study
    (Ariesdue Srl, 2021) Ozturk, K.; Kahraman, S.; Delilbasi, E. A.
    Aims Atrophic jaws make implant planning difficult due to the lack of bone, and this situation directs the surgeon to advanced surgical methods. Today, autogenous grafts are still the gold standard. The aim of this study was to evaluate the bone stability of horizontal bone grafts taken from the iliac crest. Materials and metods Twenty patients receiving horizontal bone grafts were included in this retrospective cohort study. All patients were treated with bone harvested from the anterior iliac crest. The measurements were made by means of a caliper. Screw heads reference point taken. Resorption rate was followed up in a total of 188 edentulous areas. Results Graft resorption rate was 34.66% (+/- 20.53), 32.42% (+/- 19.39) in the maxilla and 48.03% (+/- 22.34) in the mandible. It was observed that the average bone thickness increased from 2.38 mm to 7.22 mm. Conclusions The result of the present study highlight that thicker block grafts, which were applied due to the expected resorption rate, result in a higher resorption rate after recovery. Therefore, by considering soft tissue margins, the importance of harvesting a sufficient, but not excessive, amount of grafting is underscored.