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Article
Consequences of employment self–etching primer adhesive in orthodontic practice

Author: Ali R Al–Khatib
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2004 Volume: 4 Issue: 2 Pages: 95-103
Publisher: Mosul University جامعة الموصل

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Abstract

The purposes of this study were to evaluate the shear bonding strength of stainless steel brackets bonded with self– etching primer adhesive system (TransbondTM 3M Uniteck, Monrovia, California, USA), compared with same system which employ 35% phosphoric acid gel, sepa-rated primer and adhesive. Also to assess and compare clinically the brackets bond-ing failure rate after using the 2 different techniques in orthodontic patients and to examine bracket / adhesive failure mode by using modified adhesive remnant index (MARI). Fifty six extracted human premo-lars used in the laboratory part, they were divided into 2 groups (I and II), each one subdivided into upper first and second, lower first and second premolars; 7 for each subgroup. In the first group bonding was carried out by using the conventional technique (phosphoric acid / adhesive) wh-ile in the second one, the self–etching pri-mer was used. In the clinical part 15 pat-ients with upper and lower fixed applian-ces (central, lateral incisors, canines and premolars) with 13– 16 years old. The fol-low up period extended into 12–15 mon-ths. The statistical analyses in the laboratory (in vitro) part reported significantly lower but acceptable shear bond strength (8.69 and 8.42 MPa) for the upper first and second premolars, and 8.13 and 8.99 MPa for lower first and second premolars in comparison with the conventional groups (11.61 and 11.63 MPa) for upper first and second premolars, and 11.48 and 11.59 MPa for the lower first and second premolars as t–values were significant (2.69, 3.05 for the upper first and second premolars; 2.68, 2.45 for the lower first and second premolars) at p < 0.05 between study groups, but in the clinical trial no significant difference between the groups were recorded in relation to bonding failure rate as values of Z test of two proportions were ranged between 0.98 and 1.94, 0.00 and 1.94 for the upper and lower arches respectively, in spite of the higher percentages of failure rate for the self–etching primer adhesive group. The MARI reported higher frequencies at score 2, and score 3 for the control and experimental (self–etching primer) groups respectively. It can be concluded that in spite of the lower bonding strength values for the self– etching primer adhesive, but the results appear to be acceptable and this adhesive is recommended to be used in orthodontic practice. In accompanied to that the residual adhesive amount were smaller than those of the conventional one so that less damage happened to enamel surface during debonding procedures.


Article
Clinical assessment of stainless steel brackets failure rate after reduction of phosphoric acid concentration and etching time

Author: Ali R AL-KHATIB
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2001 Volume: 1 Issue: 3 Pages: S353-S362
Publisher: Mosul University جامعة الموصل

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Abstract

The purpose of this study was to evaluate clinically the effect of reduction of phosphoric acid concentration and etching time during bonding procedure of stainless steel brackets. As (240) metal mesh-backed brackets were bonded by using no-mix adhesive orthodontic composite, they were divided into (3) equal groups, each of (80) bracket (10 patients), the labial and buccal Surfaces of the first group was conditioned with (37%) phosphoric acid for (45) seconds, the second with (20%) for (10) seconds, and the third group was conditioned with (5%) for (15) seconds, all patients were received the orthodontic treatment by the same operator, the study period was (1) year of, the results indicate that the percentage of failure rate for the second and third groups did not significantly differ from the first group, this was calculated by using the Z-test of two proportions at (p<0.05). However, the evaluation of the adhesive remnant index (ARI) after bracket failure, revealed that the application of (37%) acid for (45) second resulted in higher amount residual adhesive left on the teeth The present study demonstrated that phosphoric acid concentration of (5%) for (15) seconds could be sufficient for bracket bonding on anterior or premolar teeth.


Article
Stainless steel brackets failure rate after topical fluoride application in etching procedures

Author: Ali R AL-KHATIB
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2002 Volume: 2 Issue: 3 Pages: 399-405
Publisher: Mosul University جامعة الموصل

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Abstract

Enamel demineralization that occurs adjacent to directly bonded orthodontic attachments is of great concern to orthodontists. One of the suggested procedures to overcome this problem is to use topical fluoride treatment after acid etching. The purpose of this study was to evaluate the failure rate of stainless steel bracket with metal mash base after topical application of(1.1%) neutral sodium fluoride gel after(37%) phosphoric acid etching. Twenty patients with full maxillary and mandibular "0.018" standard edgewise fixed appliances were included. Maxillary right, mandibular left sides were received the topical sodium fluoride gel application after etching with(37%) H3PO4 for(30) seconds. The gel was applied for(4) minutes after etching, then rinse with air and water stream for(5) seconds; while in the contralateral sides the bonding was done conventionally. The bonding adhesive was the No-Mix chemical cure adhesive. The follow-up period was(12-15) months. The results showed that brackets failure rate in fluoridated group did not differ significantly from the non-fluoridated one. Hence the(1.1%) neutral sodium fluoride may have a clinical application in preventing demineralization that occurred around and under orthodontic brackets without any significant increase in failure rate of stainless steel brackets


Article
Assessment of Cortical Bone Density for Orthodontic Implants Placement: Computerized tomography study

Authors: Rana M. Fadhil --- Ali R. Al-Khatib
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2015 Volume: 15 Issue: 1 Pages: 393-398
Publisher: Mosul University جامعة الموصل

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Abstract

Aims: The aims of this study were to investigate the bone density in the buccal surface of the maxilla and mandible and to assess the gender difference. Materials and Methods: The study was conducted using computed tomography images for the 46 subjects (25 males and 21 females). Based on computed tomography data, the mean bone density values in Hounsfield units were recorded at 4 different locations from the crest of alveolar bone. Results: The bone density ranged from 795.72- 975.16 Hounsfield units in the maxilla and 837.58- 1339.28 Hounsfield units in the mandible for male and from 742.93- 992.14 and 769.67- 1342.31 Hounsfield units in the maxilla and mandible for female respectively. It was found that the mandibular posterior bone had the highest cortical bone in both sexes, followed by, mandibular anterior, maxillary posterior and maxillary anterior areas in male. In female, the sequence of bone density from highest to lowest was maxillary posterior bone, maxillary anterior and mandibular anterior areas. There was significant difference between males and females in some locations with higher bone densities in males (p<0.05). Conclusions: Bone densities in the buccal maxillary and mandibular areas were presented. They were ranged between 742.93- 1342.31 Hounsfield units in various areas. These data can be used in dental implant treatment planning to avoid associated risk factors


Article
Comparison of Dental Arch Parameters of Three Degree of Anterior Crowding of Class I Malocclusion

Authors: Hussain A Obaidi --- Ali R Al–Khatib
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2006 Volume: 6 Issue: 3 Pages: S48-S57
Publisher: Mosul University جامعة الموصل

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Abstract

To assess the relation between the anterior dental crowding in Class I molar occlusion with the dental arch parameters in both dental arches and for both sexes. Materials and Methods: This study presented data from examination of the study casts for a sample of 106 maxillary and 142 mandibular dental arches of pupils of the intermediate school in Mosul City aged 12–15 years of Iraqi origin. The sample was divided into three main groups according to anterior dental crowding degree (0–2.0 mm, 2.1–4 mm and over 4.0 mm). This was done by calculation of dental arch space available (dental arch perimeter) by utilizing the segment arch technique. The six segment technique assessed by using a modified sliding caliper gauge. The mesio–distal crown width of each tooth was measured, to get the space necessary, and the difference between the space available and the space necessary is negative value represent the amount of crowding. The data was analyzed utilizing statistical analyses at p≤0.05 significant level. Results: all the dental arch parameters were insignificantly decreased throughout the three groups accompanied by increase in the degree of anterior dental crowding except the dental arch perimeter which decreased significantly, while intercanine and the canine–molar parameters were insignificantly increased in both dental arches and for both sexes. Conclusion: The inter–canine parameter increase in crowding case whereas the other parameters are decrease.


Article
Effectiveness of educational program on fixed orthodontic appliance treatment on patient’s oral hygiene

Authors: Afrah Kh Al–Hamdany --- Nada M Al–Sayagh --- Ali R Al–Khatib
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2005 Volume: 5 Issue: 1 Pages: 37-45
Publisher: Mosul University جامعة الموصل

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Abstract

The aim of the present study was to investigate whethereducated dental patients undergoing fixed orthodontic treatmentshowing better oral hygiene than dental patients who arenot educated.The sample is comprised of 16 orthodontic patients (3males and 13 females), 11–22 years old chosen randomly amongpatients at Department of Pedodontics, Orthodontics andPreventive Dentistry of College of Dentistry at Mosul University.The sample is divided equally into 2 groups; the first groupwas educated concerning fixed orthodontic treatment inrelation to oral hygiene and given education and instruction tokeep good oral hygiene during orthodontic treatment. Thesecond group is not educated. Swabs were taken from supra–gingival plaque of facial surface of upper right and lower leftcentral incisors, and upper left and lower right first molar teeth;one before orthodontic treatment and another (4–6 weeks)later and subjected to bacteriological investigation. Qualitativedata about oral microorganisms were collected and subjectedto statistical analysis.The results indicated that during treatment records forboth educated and non–educated groups show significant differencefor certain types of microorganisms and at differentlocations with the educated group scores the least in comparisonwith non–educated group


Article
The prediction of nasolabial dimensions: A stereophotogrammetric study
توقع أبعاد الأنف والشفاه: دراسة ثلاثية الأبعاد

Authors: Zainul A. Rajion زينل --- Ali R. Al-Khatib علي راجح الخطيب
Journal: Annals of the College of Medicine Mosul مجلة طب الموصل ISSN: 00271446 23096217 Year: 2013 Volume: 39 Issue: 1 Pages: 45-52
Publisher: Mosul University جامعة الموصل

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Abstract

ABSTRACTObjective: To find the most accurate measurements for the nasolabial dimensions prediction utilizing the three dimensional technology. Design: Cross-sectional study. Setting: School of Dental Sciences, Universiti Sains Malaysia, Kelantan, Malaysia.Participants: This study was conducted on 101 volunteers (16-30 years). The participants had harmonious balanced face, competent lips and no craniofacial abnormalities. Data were captured using stereophotogra- mmetry system which consists of Sony digital cameras, synchronize switch and a calibration control frame. Main outcome measures: Eighteen facial, seven nasal and 11 labial dimensions were measured and analyzed. The stepwise multiple regression analysis was applied and the level of significance was established at p<0.05. Results: The measurements of the combination of nasolabial dimensions were developed. The prediction rates were 90% and 96% and for the upper lip height, nose height respectively. However, the low prediction rate was recorded for the lower vermilion and lateral lip heights 17% each. Conclusions: New measurements for nasolabial dimensions prediction with application of three dimensional imaging technology were offered. This study could provide reliable and objective reference material for plastic surgeons for the planning of the cosmetic nasal surgery. Moreover, these information could be beneficial in the post-surgical prosthesis construction. Keywords: Soft tissues, morphology, stereophotogrammetry.

الخلاصةالأهداف: هدفت الدراسة إلى تطوير متغيرات جديدة لدراسة أبعاد الأنف والشفتين بإستخدام تقنية الصورة ثلاثية الأبعاد.تصميم الدر اسه: دراسة مقطعية.مكان الدراسة: كلية طب الأسنان في جامعة العلوم الماليزية. المشاركون: شارك في هذه الدراسة ١٠١ متطوع تتراوح أعمارهم بين ١٦-٣٠ سنة. وقد إتصف المشاركون بوجه خالي من التشوهات الخلقية في منطقتي الجمجمة والفكين. تم التقاط المعلومات بإستخدام جهاز التصوير الثلاثي الأبعاد. المتغيرات: تم قياس ٣٦ متغير في مناطق مختلفة من الوجه وخاصة المناطق الأنفية ومناطق الشفتين تم إستخدام الإنحدار المتعدد لتحليل النتائج علما بأن القيمة الاحتمالية المعنوية كانت Ρ < ٠٫٠٥.النتائج: تراوح المعدل للقياسات بين ٩٠٪ و٩٦٪ بالتعاقب للطول الأنفي وإرتفاع الشفة العليا. أما بالنسبة لحافة الشفة السفلي و لإرتفاع الشفة الجانبي فقد بلغ ١٧٪.الاستنتاجات: تم الحصول على متغيرات جديدة للتنبوء بأبعاد الأنف والشفتين بإستخدام تقنية الأبعاد الثلاثية. هذه المتغيرات يمكن أن تستخدم لغرض الإعداد لعمليات الجراحة التجميلية في مناطق الأنف والشفتين بالاضافة إلى إعداد التراكيب التعويضية لتلك المناطق في الوجه.


Article
A clinical comparison of antibacterial mouth rinses in orthodontic patients

Authors: Rafi’ A Al–Talib --- Baceer A Abdullah --- Ali R Al–Khatib
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2004 Volume: 4 Issue: 1 Pages: 59-64
Publisher: Mosul University جامعة الموصل

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Abstract

This clinical investigation was undertaken to compare the antibacterial activity of two mouth rinses (chlorhexidine digluconate 0.2% and phenolic compounds) with salty water (0.9% NaCl) to assess their ability to control plaque and gingival inflammation in conjunction with a normal daily home care in patients with fixed orthodontic appliance. In this clinical trial, 45 patients were randomly divided into three groups; each containing 15 per-sons matched in age and gender, they were instructed to use rinses twice daily for 30 seconds after breakfast and before the bedtime. The gingival and plaque indices were measured according to Silness and Löe for the six teeth at the baseline and two mon-ths after rinses. The results of the study revealed that there is a significant reduction at p < 0.05 after rinsing with phenol and chlorhexidine digluconate for gingival index, while non significant change for salty mouthwash, and only significant reduction in plaque index for chlorhexidine digluconate mouth rinse and non significant one for phenol and salty mouthwashes. These results support previous published results on the superiority of 0.2% chlorhexidine digluconate when used in conjunction with professional care as an adjunct to routine oral hygiene practice in orthodontic patients.


Article
Effectiveness of 0.2% sodium fluoride and 0.2% chlorhexidinegluconatemouthrinses accompanied tooth brushing on gingival health during orthodontic therapy: A comparative study

Authors: Tarik Y KHAMRCO --- Ali R AL-KHATIB --- Ban S AL-MUKHTAR
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2001 Volume: 1 Issue: 2 Pages: 86-92
Publisher: Mosul University جامعة الموصل

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Abstract

This study was carried out to evaluate the action of 0.2% sodium fluoride (900 ppmF), and 0.2% chlorhexidinegluconatemouthrinses besides tooth brushing on plaque and gingival indices. To achieve this aim 45 patients undergoing fixed orthodontic therapy were divided into 3 equal groups randomly which were on tooth brushing only, tooth brushing with 0.2% sodium fluoride and tooth brushing with 0.2% chlorhexidinemouthrinses. The second group rinse with 10 ml of sodium fluoride once weekly for 8 weeks, while the third group rinse with 10 mi of chlorhexidine twice daily for the same period, the plaque and gingival indices were scored at base-line and then evaluated after 4 and 8 weeks. The present study revealed that the mean plaque index was significantly reduce (p<0.05) for the chlorhexidine and sodium fluoride patients in comparison with the first group throughout period of study. A similar trend was noted with gingival index as the lower values were recorded to the chlorhexidine groups, moreover, analysis of variance showed significant differences among groups and the chlorhexidine means were the mostly affected one. These results indicate that sodium fluoride could be use also for plaque and gingivitis control in addition to its anticariogenic action for patient undergoing orthodontic treatment.


Article
Malocclusion assessment in orthodontically treated young Iraqi (6-18) years old

Authors: Ne,am F AGHA --- Afrah KH AL-HAMADANY --- Ali R AL-KHATIB
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2002 Volume: 2 Issue: 1 Pages: 80-87
Publisher: Mosul University جامعة الموصل

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Abstract

The aim of this study was to provide an additional information about occlusal variations, and to determine the possible sex difference in a group of young Iraqi who were seeking for orthodontic treatment.A sample of (253) orthodontically treated patients (125 female and 128 male) selected from (3719) patients attending P.O.P department in college of dentistry in Mosul University, for each one the age, sex, molar occlusion in accompanied to some selected malocclusion criteria (crowding, spacing, crossbite and openbite) were recorded. The results of this research evaluated the number, percentage for each type of molar occlusion and the malocclusion criteria. The using of two sided Z-test of twoproportions at (p<0.05) indicate that significant sex difference in CL IIb, CL II1,crowding and spacing and a non-significant difference in CL Ib, CLIu, CL II, CL II2, CL III, CLIV, crossbite and openbite. The occlusal variation for Iraqi follows a universal general distributional pattern for most world populations.

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