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Article
Success rate of apicectomy of anterior and premolar teeth

Authors: Mohammed Kh Hasouni --- Shehab A Hamad
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2005 Volume: 5 Issue: 2 Pages: 161-167
Publisher: Mosul University جامعة الموصل

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Abstract

This study was carried out to assess the success rate ofapicectomy of anterior and premolar teeth. Out of 336 patients,who had undergone apicectomy in a private practice between1997–2001, only 256 patients (76.2%) completed the twoyears recall visits; which was the minimum time recommendedin this study to judge whether the operation was successfulor not. The age range of the patients was 12–67 years(mean of 34.7 years), 136 were males and 120 were females.The overall success rate of apicectomy in this study was89.1%. Sex of the patient had no bearing on the success rate(p > 0.05). Highly significant influence of the patient’s age onthe success rate was observed (p < 0.01); the success rate increasedproportionally with increased age. Highly significantinfluence of the type of the apicectomised tooth on the successrate was noted (p < 0.001); upper anterior teeth showed thehighest success rate (92.1%), whereas upper premolars showedthe lowest success rate (77.4%). Periapical condition of thetooth prior to the operation, preoperative vs postoperative obturationof the root canal, and orthograde obturation vs retrogradeobturation were not significant factors affecting the successrate of apicectomy (p > 0.05).


Article
Effects of Combination of Platelet Rich Plasma and OSTEON Material in Rabbits Bone Healing (A comparative study)

Authors: Fidaa S Abdo --- Mohammed kh Hasouni
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2014 Volume: 14 Issue: 1 Pages: 90-100
Publisher: Mosul University جامعة الموصل

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Abstract

The purpose of this study is to evaluate the effects of OSTEON, PRP and the combination of both of them on the healing of experimentally induced bone defects in rabbits. Materials and Meth-ods: Fifteen domestic rabbits were used in this study; four bone defects were made in the tibia of each rabbit. The defects were filled with OSTEON, PRP, OSTEON / PRP and the other left unfilled as con-trol. Specimens were collected at one, two and four weeks after surgery. Radiographical and histologi-cal examinations were used to evaluate healing depending of the amount of new bone formed. Results: It was found that the OSTEON / PRP combination led to a significant healing compared to other groups at first week only. On the other hand PRP alone showed better result than OSTEON alone in the three periods. Conclusion: It was concluded that PRP plasma exert a beneficial effect on healing pro-cess when added to bone substitute material OSTEON.


Article
Evaluation of Chitosan as Dressing for Skin Wound. Histopathological Experimental Study in Rabbits

Authors: Alyaa I Alneamy --- Mohammed Kh Hasouni
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2013 Volume: 13 Issue: 3 Pages: 482-492
Publisher: Mosul University جامعة الموصل

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Abstract

To evaluate the effect of medical chitosan on wound healing. Materials and Methods: An experimental open skin wounds were made on the dorsal side of fifteen domestic rabbits. A 0.04gm of medical chitosan (degree of acetylation=90.0%) was applied. Each individual animal given intramuscular dose of kitamin hydrochloride (anesthetic and analgesic) 4mg/kg and xylazin base (anesthetic and muscle relaxant) 5mg/kg injected into rabbit’s thigh muscle. After 10-15 minutes, anesthetic integrity was checked by testing loss of ear pinch reflex. Four skin incisions were made in the dorsal site of the animal skin. Each incision was about 1cm in length. These incisions were divided into 4 groups according to placement of the material and suturing (Ca: control incision left without suturing or placement of material, Cs: control suturing of the incision only, Cha: chitosan placement only, Chs: chitosan placement and suturing of the incision). Post operatively single dose of 5mg/kg oxytetracycline antibiotic intramuscular injection was given immediately. The animals were randomly subdivided into three groups (G1, G2, G3) with five rabbits in each group and specimen obtained from each rabbit for histopathological study according to the time of sacrifices 3, 7, 14 days after surgery respectively. Biopsies took from each site of operation and examined by four histopathologists and the overall readings taken and processed statistically using SPSS version 18.0. Results: There was a significant variation in inflammatory response to chitosan when applied as powder dressing at all periods of healing. P-values were found to be 0.005, 0.022, 0.002 between four groups at 3, 7, 14 days respectively. While there was no significance in reepithelializeation between four groups at all periods of healing according to Pvalues of Friedman test. Conclusion: Medical chitosan appeared good healing accelerator by decreasing rate of inflammation and prevent infection

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