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Histological and histomorphometric analysis of strontium chloride coated commercially pure titanium implant compare with hydroxyapatite coating

Authors: Ghasak H. Jani --- Shatha S. Al-Ameer --- Salam N. Jawad
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2015 Volume: 27 Issue: 1 Pages: 26-31
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: In recent years, the immediate loading of dental implants has become more accepted as a standardprotocol for the treatment of the edentulous area. Success in implant dentistry depends on several parameters thatmay improve phenomenon of osseointegration and new bone formation in close contact with the implant. The aimof study was to evaluate the effect of strontium chloride coating of screw shape commercially pure titanium dentalimplant osseointegration at bone - implant interface by histomorphometric analysis and compare withhydroxyapatite coating at 2 time periods (2 weeks and 6 weeks).Materials and methods: Electrophoretic Deposition Technique (EPD) was used to obtain a uniform coating layer oncommercially pure titanium screws. The tibia of 4 white New Zealand rabbits was chosen as implantation sites. Eachtibia of rabbit received two screws, one strontium chloride coated and one hydroxyapatite coated and a total 30histological sections were obtained for each coating material in each period of time. Histomorphometric analysiswas performed to measure new bone formed ratio between implant and original bone, after 2 and 6 weeks healingperiods.Results: There was increased in new bone formation ratio for the strontium chloride coated implants thanhydroxyapatite coated implants and over the two periods of time. There was an increase in the new bone formationratio at bone-implant interface with time.Conclusion: Coating commercially pure titanium implant with strontium chloride was more efficient in increasingosseointegration at bone implant interface than hydroxyapatite , which was demonstrated by higher new boneformation and maturation at the two periods of time 2 weeks and 6 weeks after implantation


Article
The Effect of Addition of Combination of Plasma Treated Polyester and Polyamide Fibers on Surface Roughness and Some Mechanical Properties of Heat Cured Acrylic Resin

Authors: Abdalbasit A. Fatihallah عبدالباسط عبدالفتاح --- Ghasak H. Jani --- Zaynab S. Abdullah
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2018 Volume: 30 Issue: 1 Pages: 12-16
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Poly (methyl methacrylate) has several disadvantages (poor mechanical properties) like impact and transverse strength. In order to overcome these disadvantages, several methods were used to strengthen the acrylic resin by using different fibers or fillers. This study was conducted to evaluate the effect of Plasma treatment of the fiber on mechanical properties Poly (methyl methacrylate) denture base material.Materials and methods: Specimens were prepared from poly methyl metha acrylic (PMMA) divided according to present of fiber into 4 groups (first group without fiber as control group, second group with Plasma treated polyester fibers, third group with Plasma treated polyamide fibers and fourth group Plasma treated combination of polyester and polyamide fibers. The samples to be treated with oxygen gas plasmaResults: the results show that the highest mean values for all tests included in the study appeared in group IV (Plasma treated combination of polyester and polyamide fibers) except for the surface roughness test the highest mean values found in group III (Plasma treated polyamide fibers, and only polyamide fiber slight improved roughness and other group have no effect on surface roughnessConclusion The addition of plasma treated fiber ( polyester, polyamide and combination of both fiber) improve transverse, impact strength and hardness properties of denture base material and has no effect on surface roughness

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