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Article
Evaluation of mechanical and histological significance of Nigella Sativa oil extract on the osseointegration of Hydroxyapatite coated cp Ti-Implants

Authors: Rasha MH Al-Muethin رشا المؤذن --- Widad AH Alnakkash وداد النقاش
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2012 Volume: 24 Issue: 1 Pages: 23-29
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: The aim of this in vivo study was to evaluate the additive beneficial role gained from dip coating ofhydroxyapatite (HA) coated cp Ti implants in Nigella Sativa (Black Seed) oil extract and its effect on the mechanicaland histological properties of bone-implant interface.Materials and Methods: 48 cp Ti screws (3mm in diameter, 8mm in length) were implanted in tibia bones of 12 NewZeeland rabbits. 24 screws were electrophoretically coated with HA within 4 minutes (control group) and 24 wereelectrophoretically coated with HA for 4 minutes and dip coated in black seed oil extract (BSO) for 5 seconds(experimental group). The samples were distributed equally over two healing intervals 6 and 12 weeks, in everyhealing interval each tibia bone(right and left) of 6 rabbits received two samples, control and experimental.Results: After each healing interval two tests were performed: Mechanical (Removal Torque) and Histological tests.Mechanical test showed that the mean torque values for HA&BSO coated implants were significantly higher thanthose for implants coated with HA only. Also the histological analysis revealed improved quality of bone response toimplants coated with HA&BSO.Conclusions: HA and BSO extract produced a couple of synthetic and natural biomaterials act in harmony andcomplementary to each other in enhancing healthy and strong bony integration of cp Ti implants


Article
Single tooth immediate restoration of dental implants

Author: Ahmed Hashim H. AL-Musawi
Journal: Karbala Journal of Medicine مجلة كربلاء الطبية ISSN: 19905483 Year: 2012 Volume: 5 no 1 Issue: 11 Pages: 1360-1369
Publisher: Kerbala University جامعة كربلاء

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Abstract

Background: For over 20 years, dental implants have been a source of light for many who have suffered lost or bad teeth. Traditional dental implants involve placing the implants and providing the tooth restorations after 3 to 6 months after osseointegration is complete. In this procedure all is done as a single procedure rather than the traditional two stage placement or delayed placement.Objective: The purpose of this study was to examine the clinical outcome of a single-tooth implants placed in the posterior region of the oral cavity.Materials & methods: 22 adult patients were selected and a single implants were placed in the posterior region of the oral cavity. Temporary acrylic crowns were adjusted and cemented. The crown occlusion was adjusted to obtain minimal contacts in maximum intercuspation. After 8 weeks a zirconium crown was cemented. Radiographic and clinical examinations were made at baseline at 3, 6, and 12 months. Cortical bone response and peri-implant mucosal responses were evaluated.Results: Preservation of the marginal bone level at the time of implant placement was achieved. The marginal bone level mean change was 0.02 mm at 12 months. The mean Periotest value after 360 days was –3. The peri-implant mucosal adaptation to the anatomic form of the provisional crown resulted in a natural esthetic outcome, and a gain in papilla length was observed.Conclusion: We can conclude that immediate loading of unsplinted single-tooth implants in the posterior region could be an treatment option with a good esthetic outcome.Key words: dental implants, esthetics, immediate loading, osseointegration


Article
Electrophoretic deposition of Hydroxyapatite on tapered Ti-6Al-7Nb dental implants: Biomechanical evaluation in rabbits

Authors: Yaarob M. Salman يعرب سلمان --- Raghdaa K. Jassim رغداء جاسم --- Thair L. Al-Zubaydi ثائر الزبيدي
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2011 Volume: 23 Issue: special issue Pages: 36-41
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Advances in implant design have often focussed on altering the micro-topography and chemistry ofthe implant surface. This study was done to evaluate the effect of Hydroxyapatite (HA) coating on the bond strengthbetween the bone and tapered screw-shaped Ti-6Al-7Nb dental implants.Materials and methods: Electrophoretic deposition technique (EPD) was used to obtain a uniform coating ofHydroxyapatite on the tapered Ti-6Al-7Nb screws. Structural investigations were carried out on the HA coatingsurface of the Ti.6Al.7Nb alloy using X-ray diffraction (XRD). The in vivo studies were performed by the implantation oftapered screw-shaped uncoated and coated implants in the tibia of white New Zealand rabbits. To understand thebone-implant interface, biomechanical test was carried out after 2, 6 and 18 weeks healing periods.Results: The XRD result shows that the ceramic layer consists of highly crystalline form of hydroxyapatite and thecrystalline HA belong to characteristic peaks of (211) at 2Į 31.7o with the hexagonal symmetry. Biomechanical resultshows that there was increased mechanical strength (torque value) of bone-implant interface with time, and thegreater increase in the torque value was noticed between 6 and 18 weeks. Also the result shows that the taperedimplant coated with HA have higher removal torque values than uncoated one in different time intervals.Conclusion: The electrophoretic deposition (EPD) is a good alternative coating technique for dental implant. HAcoated implants demonstrate high torque value and early healing than uncoated implants, which is very importantin early loading of the implant


Article
Postoperative assessment of dental implants by using multi-slice computed tomography

Authors: Resha J. Al-Sudani --- Lamia Al-Nakib لمياء حامد النقيب --- Shifaa H. Al-Naimi
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2013 Volume: 25 Issue: 4 Pages: 52-55
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Implantology is a fast growing area in dentistry. One of the most common issues encountered in dentalimplantation procedures is the lack of adequate preoperative planning. Conventional radiography may not be ableto assess the true regional three-dimensional anatomical presentation. Multi Slice Computed Tomography providesdata in 3-dimentional format offering information on craniofacial anatomy for diagnosis; this technology enables thevirtual placement of implant in a 3-Dimensional model of the patient jaw (dental planning).Patients, Material and Methods: The sample consisted of (72) Iraqi patients indicated for dental implant (34 male and38 female), age range between (20-70) years old. They were examined during a time period started from December2012 to April 2013. All the patients who subjected to implant treatment depending on the pre-operative panoramicradiograph were referred Al-Kharkh General hospital, spiral CT scan Department, for postsurgical assessmentevaluate the angulation of fixture in relation to the angulation of bone in coronal and sagittal sections by usingMulti-Detector Computed Tomography.Results: The present study showed that the angulation of implant affected by age, sector, and tooth position in thesame jaw, and not affected by gender.Conclusion: Multi-Slice Computed Tomography provides a great understanding about bone angulation, it necessaryas a diagnostic tool for treatment planning pre and post-operatively


Article
Computed tomography bone density in Hounsfield units at dental implant receiving sites in different regions of the jaw bone

Author: Lamia H. Al-Nakib لمياء حامد النقيب
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2014 Volume: 26 Issue: 1 Pages: 92-97
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Determination of local bone mineral density (BMD) with cortical thickness and bone height may offer acomprehensive description of the bone the surgeon will encounter when he or she actually sets the implant.Quantitative computed tomography (CT) (i.e., quantitative interpretation of values derived from Hounsfield units witha suitable calibration procedure) is the modality of choice to determine BMD. The aim of the present clinical study isto determine the local bone density in dental implant recipient sites using computerized tomography.Material and method: The sample consisted of (72) Iraqi patients whom referred to Al-Kharkh General hospital, SpiralCT scan Department for bone quality and quantity assessment after one week of dental implants insertion, theaverage of bone density was measured for 120 areas indifferent sectors of maxilla and mandible in Hounsfield unite.Results: As a mean, males show higher bone density than females, decreased with increased age significantly,mandible show significantly higher bone density than maxilla. Maxilla revealed no significant difference between thethree sectors, while in the mandible there was significant difference between posterior sector (613.1HU)and bothanterior (821.3 HU) and premolar sectors (779.6 HU) with no significant difference between anterior and premolarsectors.Conclusion: CT-Scan may provide a valuable aid to predict bone quality at potential implant sites and could beused to assess the change of bone density around dental implants

مع سماكة القشرة العظمية و ارتفاع العظم قد تقدم وصفا شاملا للعظم للجراح ليحدد امكانية زراعة الأسنان بالاعتماد على قياس ) BMD( معلومات أساسية : تحديد كثافة العظامإن الهدف من هذه الدراسة السريرية الحالية هو تحديد كثافة العظام المحلية في بعد غرز الزرعات السنية .)CT( الكثافة العظمية بوحدة هاونسفيلد بواسطة التصوير المقطعيبأسبوعبوحدةهاونسفيلد باستخدام التصوير المقطعي.طرق البحث: تم قياس متوسط كثافة العظام ل 27 مريض بوحدة الهاونسفيلد باستخدام الأشعة المقطعية في مستشفى الكرخ العام ، قسم الاشعة المقطعية ل 071 لمنطقة ما حولالزرعهفي مختلف مناطق الفكين العلوي والسفلي .النتائج:كثافة العظم تكون اكبر عند الرجال والأصغر سنا وفي الفك السفلي اكثر من لعلوي. ولا توجد فروقات محسوسة بين مناطق الفك العلوي, لكن في الفك السفلي هناك فرق بينالمقطع الخلفي عن المقطعين الأمامي والضواحك.الخلاصة: الأشعة المقطعية قد توفرمساعدة قيمة للتنبؤ بجودة العظام في مواقع زرع المحتملة ويمكن أن تستخدم لتقييم التغيرفي كثافةالعظم حول الزرعات السنية.


Article
Assessment of bone density after six months from dental implants placement using Computed Tomography

Author: Resha J. Al-Sudani رشا جميل السوداني
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2014 Volume: 26 Issue: 4 Pages: 126-128
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Determination of local bone mineral density (BMD) immediately after implant insertion play animportant role in implant success rate, may offer comprehensive description of the bone, and give enoughinformation to the surgeon prior to implant insertion and at follow up status. The aim of the present study is toevaluate the changes of local bone density in the dental implant recipient sites by using computerized tomography.Material and method: The sample consisted of (20) dental implants recipient sites, bone density assessment was donetwice, immediately after implants insertion and after six months.Results: The mean HU of the bone around the implant insertion site, immediately after implant placement was 552.28HU, and increased to761.33HU after six months. According to gender, with females, it was 539,54HU, and increased to765.65HU after six months from implant insertion while with males, it was 565.02HU, and increased to 757.02HU after sixmonths from implant insertion.Conclusion: There was an increased in bone density around dental implant by time with non-significant differencesaccording to the gender.

الخلفیة: تحدید كثافة العظام قبل وبعدغرزالزرعات السنیة من الامور المھمة جدا في نجاح زراعة الاسنان. إن الھدف من ھذه الدراسة السریریة الحالیة ھو تحدیدكثافة العظام بعد عملیة زراعة الاسنان.طرق البحث: تم قیاس متوسط كثافة العظام ل 20 زرعة بوحدة الھاونسفیلدباستخدام الأشعة المقطعیة ، ا لمنطقة ما حول الزرعھفي مختلف مناطق الفكین العلويوالسفلي.بعد الزراعة مباشرة وبعد مرور 6 اشھر من زراعة الاسنان.النتائج: متوسط كثافة العظم حول الزرعة السنیة مباشرة بعد غرز الزرعة كان ما یعادل 552.28 وحدة قیاس الكثافة, حیث انھا ازدادت لتصل الى 761.33 وحدةبعد ستة اشھر من غرز الزرعة, معدل كثافة العظم بعد غرز الزرعة مباشرة عند الرجال 565.02 وحدة وبعد مرورستة اشھر ازدادت لتصل 757.02 وحدة اماعند النساء 539.54 وحدة مباشرة بعد الغرز وبعد ستة اشھر ازدادت لتصل 765.65 وحدة.الاستنتاج :كثافة العظم تزداد بعد مرور 6 اشھر من زراعة الاسنان وتكون نسبة الزیادة متساویة عند الرجال والنساء بفارق غیر محسوس احصائیا.


Article
The Electrophoretic Deposition of Nano Al2O3 and AgNO3 on CpTi Dental Implant (An in vitro and in vivo study)

Authors: Rsul N. Turky رسل تركي --- Raghdaa K. Jassim رغداء جاسم
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2016 Volume: 28 Issue: 1 Pages: 41-47
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Even the wide use of dental implants, still there is a proportion of implants are failed due to infection.Much considerable attention has been paid to modify the implant surface. Coating of dental implant with abiocomposite material of suitable properties can improve osseointegration. And this is the main concern of this study.The aim of present study was to evaluate the use of a biocomposite coating of dental implant with (ceramic nanoAl2O3 and metalic AgNo3) on the bond strength at bone – implant interface and tissue reaction.Materials and methods: A total number of forty-eight screws, CpTi dental implant used in this study. Half of thesescrews were coated with a biocomposite material of nano (Al2O3and AgNo3), this was done by using electrophoreticdeposition method (EFD). In invitro part of the study, analysis of the coated surface was done using: X ray diffraction(XRD), atomic force microscope (AFM), Energy Dispersive X-ray spectroscopy (EDX), Optical microscopy andScanning electron microscope (SEM). In invivo part of study, 10 white male New Zealand rabbits were used, and ascrew type of dental implant [uncoated and coated with nano (Al2O3and AgNo3)] were implanted in each tibia ofrabbit. Then biomechanical and Histological test were performed after 2 and 4 weeks healing intervals.Results: The results of biomechanical test showed a higher torque mean values of (M+SD):(14.91N.cm+2.7)and (22.5N.cm +5.31) after 2 and 4 weeks respectively. In histological examination of coated screws at 2 weeks, there isabone trabeculae occupies a base of implant bed with osteoblast andosteocyte. At 4 weeks, there is a progress inthe healing process around dental implant, and this includes: -new bone with haversian canals, osteoblast andosteocyte.Conclusion: Biocomposite coating of dental implant with Alumina and silver nitrate can be made by electrophoreticdeposition method (EPD), and a multifunctional surface has been created


Article
Pre-implant computed tomography and insertion torque measurement in qualitative determination of trabecular bone density

Authors: Mahmood J. Hamzah محمود حمزة --- Jamal A. Al-Taei جمال الطائي
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2012 Volume: 24 Issue: 2 Pages: 56-61
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Bone density is a very important factor in the successful plan of implant treatment. The aim of the studyis to evaluate the trabecular bone density of potential dental implant sites in different region of the jawbone by usingComputerized Tomography (CT) , and the relationship between bone density and insertion torque.Materials and method: In this clinical study 64 patients were treated with 120 Xive FRIADENT DENTPLY system implants.The implant recipient sites were divided in two groups according to gender; 60 in males and 60 in females and eachgroup was divided into subgroups according jaw (maxilla and mandible) and region (anterior and posterior). Thebone density of each implant recipient site was recorded in Hounsfield units (HU) using CT. The maximum insertiontorque (Ncm) values were recorded with torque controlling motor.Results: There was a significant correlation between bone density and insertion torque in males (r=0. 983, p <0.001)and females (r=0.955, p <0.001).The trabecular bone density values were (682±98 HU, 481±104 HU, 413±92 HU, and263±67 HU) values in the anterior mandible, posterior mandible, anterior maxilla, and posterior maxilla, respectively.Trabecular bone density was higher in males in comparison to females and the bone quality was higher for themandible than for the maxilla, and higher for the anterior region than for the posterior region of these bones. Infemales there is no significant difference in bone density (p<0.05) between the posterior mandible and anteriormaxilla and between males and females at posterior maxilla (p<0.001).Conclusion: Trabecular bone density is a key determinant for clinical success; CT is a useful tool for assessing thebone density


Article
Analysis of inflammatory cells in osseointegration of CpTi implant radiated by low level laser therapy

Author: Eman I. Al- Tamemi ايمان التميمي
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2015 Volume: 27 Issue: 1 Pages: 105-110
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Dental implants provide a unique treatment modality for the replacement of a lost dentition .This isaccomplished by the insertion of relatively an inert material (a biomaterial) into the soft and hard tissue of the jaws,there by providing support and retention for dental prostheses. Low level laser therapy (LLLT) is an effective tool usedto prompt bone repair and remodeling, this has referred to the biostimulation effect of LLLT. The Aim of this study wasto evaluate the effects of inflammatory cells on osseointegration of CpTi implant irradiated by low level laser.Materials and Methods: thirty two adult New Zealand white rabbits, received titanium implants were inserted in thetibia. The right side is considered as experimental groups and the left side considered as control groups. Low powerdiode laser (GaAlAs ) with wave length (904nm) and (5mW)power applicated with the right implants . The sampledivided into four groups, eight rabbits were sacrificed at four interval 4days, 1 weeks, 2weeks, and 6weeksrespectively. Histological and inflammatory analyses were done for each interval.Results: Histological examination showed acceleration of bone formation and more rapid healing process in thescrew implant with laser irradiation than in the control implant .inflammatory analysis showed dramatic decrease withthe presence of laser irradiation especially with advancing time.Conclusion: This study illustrated that the inflammatory cells were reduced in osseointegration of dental implanttreated with LLLT.


Article
Dental implants in an orthodontically created spaces using NiTi open coil spring in anterior and premolar regions

Authors: Omar Fawzi Abduljabbar --- Omed I. Shihab --- Othman A. Omer
Journal: Zanco Journal of Medical Sciences مجلة زانكو للعلوم الطبية ISSN: 19955588/19955596 Year: 2017 Volume: 21 Issue: 2 Pages: 1722-1725
Publisher: Hawler Medical Univeristy جامعة هولير الطبية

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Abstract

Background and objective: Orthodontic space opening is a common treatment for congenitally missing teeth. Dental implants are often used to replace the missing tooth to establish ideal esthetics without restoring the adjacent teeth. This study aimed to investigate the outcome of implants placed in orthodontically created bone. Methods: Fifty dental implants were used for rehabilitation of lost tooth/teeth in 30 patients after space creation using orthodontic treatment. Patients with congenital and traumatic missing tooth/teeth, who lost the space for accommodation of normal size crown, and patients with spacing were enrolled in the study. NiTi open coil spring was used for space creation. The patients were followed up clinically and radiographically (OPG). Results: Out of 50 implants, the success rate was 78% (39 implants). Eleven implants (22%) failed to get osseointegration. Mean age of the patients was 26.33. Female patients constituted 63.33%, and male patients 36.67%. A new one replaced all the failed implants. Most of the failures were in the mandible. Conclusion: Orthodontic treatment can be used as a type of osteodistraction method for provision of an acceptable amount of bone for dental implants. The quality of the gained bone can be improved by offering sufficient time for healing.

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