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Article
Prevalence of overhang margins in posterior amalgam restorations and alveolar bone resorption

Authors: Adel F. Ibraheem عادل فرحان ابراهيم --- Khulod A. Al-Safi خلود الصافي
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2005 Volume: 17 Issue: 1 Pages: 11-13
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Overhanging dental restorations(ODR) are a major dental health problem, it is an etiologic factor in the progression of periodontal disease, and are alarmingly prevalent .The purpose of this study was to determine the prevalence of overhang margins and associated periodontal status in 100 patients, clinically detectable overhang margins were recorded on posterior teeth.Materials and Methods: Overhanging margins on a proximal restoration were detected by using of bitewing radiographs. 2089 restored surfaces were evaluated, of these 1185 had overhanging margins.Results: As far as related to their effect (ODR) on periodontal health, significantly more bone loss-attachment occurs adjacent to ODR compared to teeth without ODR.Conclusion: This study show high prevalence of overhanging amalgam margins, further more, this study show that ODRs have a significant influence on periodontal status.

Keywords

Overhang --- amalgam --- bone resorption


Article
Radiographic and microscopic evaluation of the efficacy of two different techniques in obt-uration of internal resorption defects (An in vitro comparative study)

Author: Ragheed M Basheer
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2005 Volume: 5 Issue: 1 Pages: 83-87
Publisher: Mosul University جامعة الموصل

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Abstract

This study was designed to determine the effectivenessof lateral compaction and ultrasonic condensation obturationtechniques for internal resorption defects, for which 20 extractedhuman maxillary central incisors teeth were selected.They were instrumented up to size 55 file. Their roots weresectioned transversely 6 mm from the apex and hemicircularcavities were prepared in both sections using #6 round bur.The sections were glued back together using cyanoacrylatethus obtaining root canal with cavities simulating internal resorption.The teeth were randomly divided into 2 groups of 10teeth each. The following obturation techniques were evaluated:Lateral compaction (Group I), and ultrasonic condensation(Group II). Ultrasonic condensation gave good results.Obturated internal resoption defects were filled mainly withgutta percha. Statistical analysis showed that there was significantdifference between Groups I and II. Results with lateralcondensation were inferior compared to ultrasonic condensationtechnique for obturation of simulated internal resorptiondefects Therefore, the latter technique is recommended to beused to obturate the defects of internal resorption defects inclinical practice.


Article
A Comparative Study for Localization of Odontoclast in Crown and Root of Physiological Resorbed Primary Teeth

Author: Rafea M. Al-Gburi رافع محمد عباس
Journal: Tikrit Journal for Dental Sciences مجلة تكريت لعلوم طب الاسنان ISSN: 20731213 Year: 2013 Volume: 2 Issue: 2 Pages: 96-100
Publisher: Tikrit University جامعة تكريت

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Abstract

Root and crown resorption is a physiologic event for the primary teeth. It is still unclear whether odontoclasts, the cells which resorb the dental hard tissue, are different from the osteoclasts, the cells that resorb bone. Dental tissue resorption seems to be initiated and regulated by the stellate reticulum and the dental follicle of the underlying permanent tooth via the secretion of stimulatory molecules, i.e. cytokines and transcription factors. The primary teeth resorption process is regulated in a manner similar to bone remodeling, involving the same receptor ligand system known as RANK/RANKL (receptor activator of nuclear factor-kappa B/ RANK Ligand), which represent two cytokine-like proteins of the tumor necrosis factor superfamily, are localized on bone cells and dental cells .They are crucial for the regulation of osteoclastic/odontoclast cell differentiation and also for the upregulation of mature osteoclasts/odontoclasts mediated by cell-to-cell contact and a subsequent cascade of diverse intracellular signaling processes .The aim of the present study was to localize and compare the IHC reactions for RANKL along root surface and the crown of human phsiological resorbed primary teeth. Fifteen human upper deciduous (second molar) teeth ,undergoing root and crown resorption were used for immunohistochemical study to identify RANKL expression. The results demonstrated a high mean of expression of RANKL in root as compared with crown in human primary shedding teeth. The present study concludes that RANKL play a role in resorption process of the primary teeth.


Article
The prevalence of root resorption in radiographically examined teeth

Authors: Nazar GH JAMEEL --- Zaydoon M KASIM
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2001 Volume: 1 Issue: 2 Pages: 148-152
Publisher: Mosul University جامعة الموصل

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Abstract

The aim of this study is to determine the prevalence of root resorption in radiographically examined teeth, (256) patients admitted for routine intraoral examination were included in the study. (16%) of the patients show root resorption in one or more teeth, and (5.64%) of all the examined teeth show evidence of external root resorption. The periapicalinflammation was the main cause of external root resorption, Two cases of internal root resorption were found in this study.

Keywords

External --- internal --- root resorption


Article
Clinical and Radiographical Assessment of Topical Application of Collagen Fibrils on Tooth socket Healing

Author: Israa A. Abdal-Hameed
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2014 Volume: 14 Issue: 2 Pages: 244-251
Publisher: Mosul University جامعة الموصل

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Abstract

Aims: To evaluate the effect of collagen fibers that placed immediately in alveolar bone socket after tooth extraction on homeostasis, quality and quantity of bone formation and their complications.Materials and Methods: The study group consists of 10 patients who attend to Oral and Maxillofacial Department in Dentistry College of Mosul University. The patients complained from chronic periapical lesions in badly carious two teeth in the same jaw (upper or lower jaw) that indicated for teeth extraction. Every patient underwent teeth extraction after receive local anesthesia with vasoconstriction, immediately after teeth extraction we put highly concentrated collagen material PARASORB® Dental Cones: 1 collagen cone contains 22.4 mg native equine collagen fibrils (RESORBA Wundversorgung GmbH & Co. KG, Germany) in one tooth socket (study site) and leave the other tooth socket to fill with blood clot (control group),Follow up the patients clinically and radiographically were done immediately after placement the material followed by different interval depending on the using test until six weeks. Results: The clinical assessment showed there is high significant difference (p-value ≤ 0.01) in the haemostatic condition between the study and control sites while there is no significant difference (p-value >0.05) in infection involvement of both study and control sites. The radiographical assessment of bone formation showed significant difference in bone density between study sites and control sites after two weeks (p-value ≤0.05), and high significant difference at fourth and sixth weeks (p-value ≤0.001). Conclusions: The collagen fibril play important role in control of hemorrhage following tooth extraction, prevent infection at the surgical site, promote granulation tissue formation and wound healing, reduce alveolar ridge resorption after tooth extraction (socket preservation) and enhance bone formation.


Article
Evaluation of dental health and thickness of mandibular inferior cortex among menopaused Iraqi cigarette smokers sample by the aid of using digitapanoramic radiography

Authors: Dr. Dujanah S. Al-Abboushi, B.D.S., M.Sc.** د. دجانة العبوسي --- Assist. Prof. Dr. Lamia H. Al-Nakib, B.D.S., M.Sc د. لمياء النقيب
Journal: MUSTANSIRIA DENTAL JOURNAL مجلة المستنصرية لطب الاسنان ISSN: 18138500 Year: 2010 Volume: 7 Issue: 2 Pages: 235-244
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

AbstractSmoking is linked to osteoporosis through its anti-estrogenic effect in womenwhich results in premature menopause in smokers and increased bone resorption iscorrelated with estrogen loss in menopause women. The aim of this study is toevaluate the effects of smoking and hormonal changes on the thickness of mandibularinferior cortex and the dentition status in both maxilla and mandible (DMFT) inmenopausal females and to estimate the value of panoramic radiographic findings inassessing the possibility of latent osteoporosis. Panoramic images for 80 healthy,median stature, smokers and non-smokers Iraqi female subjects aged (20-35) yearspremenopausal and (45-60) years menopause was done, then the thickness ofmandibular inferior cortex and (DMFT) was evaluated. The results showed thatpanoramic radiographic measurements are considered as indicator of bone turnoverand the dentist is able to identify smokers and non-smokers postmenopausal femaleswith increase risk of osteopenia and osteoporosis by using dental panoramicradiography which is a simple valuable screening tool.


Article
The Effect of local injection of strontium on inhibition and repair of orthodontically induced root resorption in rats (An experimental study)

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Abstract

Background: Strontium (Sr) is an alkaline earth trace metal cation that has a highaffinity for hydroxyapatite. This study aimed to examine the histological effect oflocally injected strontium (Sr) on prevention and repair of induced root resorptionof rat molar subjected to orthodontic tooth movement.Materials and Methods: Eighteen ten-week- old male Wister rats were randomlydivided into two groups of nine animals for two experiments. In both experiments;uniform standardized expansive springs were used to move maxillary first molarsbuccally for three weeks and then removed. In experiment No.1, at the time ofspring placement, 0.25 ml of the strontium chloride solution at a concentration 240mg/ml was injected at the sub-periosteum of the buccal side of the maxillary leftfirst molar which was the experimental side. On other hand, 0.25 ml of distilledwater was injected at the sub-periosteum of the buccal side of the right maxillaryfirst molar which was the control side. The injections repeated every other day forthree weeks whereas in experiment 2 it was begun at the day of spring removal andrepeated every other day for another three weeks. After that the animals werescarified humanly and biopsies were taken for histological examination.Results: In experiment 1 the side injected with strontium showed statisticallysignificant lesser root resorption than control side, while in experiment two thestrontium injected side showed significantly more repair.Conclusion: Results of the study suggested that local injection of strontium caninhibit root resorption process and enhance repair.


Article
Diagnosis and localization of the maxillary impacted canines by using dental multi-slice computed tomography 3D view and reconstructed panoramic 2D view

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Abstract

Background: Diagnosis and treatment planning can be difficult with conventional radiographic methods as the or-thodontic-surgical management of impacted canines requires accurate diagnosis and precise localization of the impacted canine and the surrounding structures. This study was aimed to localize and evaluate weather there is any differences in the diagnostic information provided by multi-slice computed tomography three dimensional volumet-ric CT images and two dimensional reconstructed panorama images (derived from CT) in subjects with impacted maxillary canines.Materials and Methods: Thirty patients including 24 female and 6 male with mean age of 18 years with suspected unilaterally or bilaterally impacted maxillary canines were evaluated on images taken with Brilliance™ 64, Philips mul-ti-detector computed tomography. The spatial relationships of the impacted maxillary canines relative to the adja-cent structures was evaluated using linear and angular measurements, and the adjacent lateral incisor root resorp-tion was assessed with three dimensional and two dimensional visualization software.Results: The inclination of the impacted maxillary canine measured to the midline and to the occlusal plane did not differ significantly when it was evaluated using the two imaging modalities. However, there were significant differ-ences between the 3D and 2D images with respect to the impacted maxillary canine vertical height, bucco-palatal localization, and in detecting the proximity and root resorption of the adjacent lateral incisors.Conclusion: Dental CT volumetric images provide more reliable and accurate information for diagnosing the maxil-lary impacted canine position, inclination, distance from adjacent structures, and detection of lateral incisors rootre-sorption.


Article
The Effect of Soft Lining Materials on Mandibular Residual Ridge Resorption for Edentulous Patient

Author: Ammar Kh Al-Noori
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2013 Volume: 13 Issue: 1 Pages: 66-71
Publisher: Mosul University جامعة الموصل

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Abstract

Aims: The aims were to evaluate mandibular residual ridge resorption for patients wearing lower com-plete dentures made of heat curing acrylic resin lined with acrylic soft liner and compare it with pa-tients wearing conventional heat curing dentures and compare patients satisfaction with dentures for both groups. Materials and Methods: Residual ridge resorption was evaluated in 35 male patients through a period of 6 months by means of digital panoramic radiographs, the patients divided into three groups, first group 5 patients not used prostheses, the second group 15 patients worn conventional heat curing dentures and the third group 15 patients worn dentures lined with acrylic based soft liner, the patients also surveyed about their satisfaction with dentures. Results: The results indicated insignifi-cant difference in the rate of residual ridge resorption between the three tested groups in 6 months peri-od. Conclusions: There is no significant difference between conventional heat curing dentures and dentures lined with acrylic based soft lining material regarding the rate of residual ridge resorption. Regarding denture satisfaction, most patients seem to have more comfortable denture and better chew-ing ability by using soft liners.


Article
The correlation between root resorption and some immune parameters in well- controlled type Ι diabetic patients during orthodontic treatment

Author: Ayam Alihassoon Taha ايمن علي حسون
Journal: Tikrit Journal for Dental Sciences مجلة تكريت لعلوم طب الاسنان ISSN: 20731213 Year: 2015 Volume: 3 Issue: 1 Pages: 95-104
Publisher: Tikrit University جامعة تكريت

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Abstract

Background:Type 1 diabetes mellitus is the result of a breakdown in immune regulation that leads to expansion of auto reactive CD4and CD8T- cells, autoantibody-producing B lymphocytes and activation of the innate immune system, so disturbances of immune system may be the cause and/or associated with diabetes mellitus. Some of these diabetic patients seek an orthodontic care. The orthodontist must remain vigilant as they may be the only health care professional seen by otherwise fit, young patients on a regular basis, and it is also important to implement risk control procedures during and after orthodontic treatment.Aims: The aim of this study was to analyze serum levels of immunoglobulins ( IgG, IgA , and IgM) ,and complement components (C3, and C4) after 6 months (T6) of orthodontic treatment in well-controlled type Ι diabetic patients wearing orthodontic appliance comparing with non-wearing group and to correlate these immune parameters with grade of root resorption which sometimes happen during orthodontic treatment .Materials and methods: Sixty well- controlled type Ι diabetic patients (HbA1c <8.5), were participating in this study. Thirty cases of them(16 male and 14 females) were wearing fixed orthodontic appliance, and the other thirty cases didn’t wear orthodontic appliances and considered as the controls (12 male and 18 females).The mean age of study groups was(15± 1SD) years. Periapical radiographs of the upper central incisors were obtained of all patients before(T0) and 6 months after(T6) orthodontic treatment. At (T6), root resorption was classified as grade 0 (no resorption) ,grade 1 (slight resorption), and grade 2 (moderate to severe resorption). Serum level of IgG , IgA, IgM ,C3, and C4 were analyzed after 6 months orthodontic treatment were determined using single radial immunodiffusion method (SRID) to the two study groups. Chi square test and T- test were used to assess the association between qualitative and quantitative results respectively ,while paired t- test was used to analyze the results after 6 months (T6) orthodontic treatment, differences were considered significant at P<0.05.

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