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Article
A COMPARATIVE STUDY BETWEEN OSSEOINTEGRATION SUCCESS RATE OF ONE STAGE AND TWO STAGE PROCEDURE IN IMPLANT SURGERY IN BASRAH PROVINCE

Author: Riad G Altaee
Journal: Basrah Journal of Surgery مجلة البصرة الجراحية ISSN: 16833589 / ONLINE 2409501X Year: 2015 Volume: 21 Issue: 2 Pages: 66-79
Publisher: Basrah University جامعة البصرة

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Abstract

Abstract This study aimed to evaluate the osseointegration success rate of one stage procedure in comparison with two stage procedure in implant surgery. Eighty patients (28 males, 52 females) received 128 implants, 36 in the mandible and 92 in the maxilla. Fifty nine implants were inserted in the one stage procedure & 69 implants in the two stage procedure. All implants were followed-up for 6 months according to the success criteria (Albrektssons criteria). Total success rate was 97.6%. In the one stage procedure it was 96.6% and 98.5% in the two stage procedure. There was no statistical significant difference between the two procedures. In conclusion, the one stage procedure can be employed as successful alternative to two stage procedure when there is good primary stability and no bone augmentation at the time of implant placement.


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
Histological and histomorphometric studies of the effects of hyaluronic acid on osseointegration of titanium implant in rabbits

Authors: Mohammad Hasan Mohammad محمد حسن محمد --- Nada M. H. Al-Ghaban ندى الغبان
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2018 Volume: 30 Issue: 2 Pages: 10-16
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: One of the unique prosthesis for tooth or teeth replacement is the dental implant. Our attempt is using a biomaterial system that is easily obtained and applicable and has the ability to provoke osteoinductive growth factor to enhance bone formation at the site of application. One of these natural polymers is hyaluronic acid. Material and methods: Sixty machined surface implants from commercially pure titanium rod inserted in thirty NewZealand rabbits. Two implants placed in both tibia of each rabbit. The animals scarified at 1, 2 and 4 weeks after implantation (10 rabbits for each interval). For all of animals the right tibia’s implant was control (uncoated) and the left one was experimental (coated with 0.1ml Hyaluronic acid gel). All sections have been stained with Haematoxylin and Eosin then they were histologically examined and assessed for histomorphometric analysis for counting of bone cells (osteoblast, osteocyte and osteoclast), cortical bone thickness, trabecular width, thread width and marrow space star volume (V*).Results: Histological findings for hyaluronic acid- coated titanium implant revealed an earlier bone formation, mineralization and maturation than that in control groups. Histomorphometric analysis for all bone parameters that examined in this study, showed highly significant difference between control and experimental groups in all healing intervals.Conclusion: Commercially pure titanium endosseous implants coated with hyaluronic acid may be osteocoductive thus accelerating healing process and enhancing osseointegration


Article
Osseointegration of dental implants without primary stability: an experimental study in sheep
Osseointegration من زراعة الأسنان دون الاستقرار الأولي: دراسة تجريبية في الأغنام

Authors: Ahmed A. Haider --- Othman A. Omer --- Hozak Zahir Ali --- Abduljaleel Azad Samad --- et al.
Journal: Zanco Journal of Medical Sciences مجلة زانكو للعلوم الطبية ISSN: 19955588/19955596 Year: 2017 Volume: 21 Issue: 1 Pages: 1616-1618
Publisher: Hawler Medical Univeristy جامعة هولير الطبية

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Abstract

Background and objective: Primary implant stability is considered necessary forachieving and maintaining osseointegration. This experimental study aimed to evaluate theoutcome of implants without primary stability, clinically and radiographically.Methods: Two adult sheep (3-4 years of age), 70 kg in weight, were included in the study.After sedation and local anesthesia, the lateral side of the basal bone of mandible isexposed by a single long incision. The implant bed performed in the inferior border of thebasal bone of mandible drilling to 5 mm in diameter and 10 mm in length. Five implantswere inserted into the basal bone of mandible for each side (right and left), but the sizes ofinserted implant was 3.8 mm in diameter and 10 mm in length, after 4 months the 2 sheepwere sacrificed and the universal torque ratchet was used to measure the stability of theimplant by a counter torque 30 N/cm test. Cone Beam Tomography (CBCT) was used toevaluate the implants radiographically.Results: Nineteen (from 20) implants successfully tolerated a 30 N/cm countertorque testcomprising (95%). Only one implant failed to osseointegrate (5%). During the healingperiod, no any adverse clinical signs reported.Conclusion: Dental implants may have a chance to osseointegrate even in the lack ofprimary stability.


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
Histological evaluation of osseointegration around titanium implants in thyroidectomized rabbits (experimental study).

Authors: Zaid M. Ali زيد علي --- Nada M. H. Al-Ghaban ندى الغبان
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2012 Volume: 24 Issue: 2 Pages: 75-79
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Thyroid hormones are essential for linear growth and peak bone mass acquisition. Hypothyroidismoccurs when the thyroid gland produces less than the normal amount of thyroid hormones. The present study wascarried out to evaluate the effect of hypothyroidism on osseointegration around the titanium implants screwed inrabbit's tibia.Materials and methods :Fifty four machined surface Iraqi implants were inserted in 27 male rabbits (2implants in eachrabbit's tibia ).Eighteen of these rabbits were subjected to near total thyroidectomy to induce hypothyroidism threeweeks before implantation surgery. While the remaining 9 rabbits were remain as a control group. Blood sample wastaken from each animal at the beginning of this study in order to find the normal range of T3,T4,and TSH .And anotherblood sample was taken for experimental groups to find the levels of T3,T4,and TSH three weeks after thyroidectomyin order to assess the hypothyroidism status .After 2, 4, 6 weeks after implant surgery (6rabbits from experimentalgroup and 3rabbits from the control group) were sacrificed. In the day of scarification, one of the screws wasunscrewed with a torque meter, and the peak torque required to shear off the implant was recorded. Then thedecalcified sections of the bone around the implants were studied histologically and histomorphometrically .The eyepiece reticule was used for morphometrical studies, which were includes: number of osteocytes, number ofosteoblasts, thickness and number of bone trabeculae, and thread widthResults:The results showed that hypothyroid rabbits had delay in osseointegration, bone formation and maturationaround implants in almost all rabbits in experimental groups. While the rabbits in the control groups showedimprovement in osseointegration around titanium implant. Removal torque test illustrated higher torque test value incontrol animals than in experimental one. Moreover, there were increases in torque test values in both groups withtime. Biochemical serum analysis revealed a decrease in T3, T4, and increase TSH levels in experimental animals.Conclusion: It can be concluded that there were low bone quality with a delay in bone healing around titaniumimplants in hypothyroidied rabbits compared with healthy one.


Article
Expression of matrix metalloproteinase-2 in the extracellular matrix of osseointegrated and diseased implants

Author: Ghada I. Al-Duboni
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2013 Volume: 25 Issue: 3 Pages: 176-182
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Recently with improvement of dental implantology science, osseointegrated implants show aconsiderable durability, however; failures are not completely avoidable. Matrix metalloproteinase-2 (MMP-2)expression is disturbed in many pathological conditions such as peri-implantitis and periodontitis. This study wascarried out to investigate the tissue expression of MMP-2 in the extracellular matrix of osseointegrated and diseasedimplants.Subjects and methods: Gingival biopsies were collected from six patients having osseointegrated or workingimplants and twenty with diseased or non osseointegrated implants and (6) controls having no implants. In situhybridization technique was used to analyze the changes in immunoreactivity of ECM-controlling MMP-2.Results: The findings of the present study indicate that the expression of MMP2 was significantly elevated in failedimplants versus healthy implants (P<0.01). In addition, MMP-2 was detected in peri-implant sites with ongoing boneloss, cavitations and inflammatory reaction.Conclusion: The in situ hybridization technique, showed clear evidence that MMP-2, which is involved in the processof osseointegration and bone remodeling, increase greatly in the presence of bone destruction, cavitations, severeinflammation and fibrous tissue formation. The data link titanium- induced bone remodeling to changes in expressionand distribution of MMP-2.


Article
Evaluation of Immediate post-extraction implants of 34 patients in Basrah province.

Author: Dr. Riad G. Altaee F.I.C.M.S * د. رياض الطائي
Journal: MUSTANSIRIA DENTAL JOURNAL مجلة المستنصرية لطب الاسنان ISSN: 18138500 Year: 2013 Volume: 10 Issue: 1 Pages: 98-105
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

The aim of this study was to evaluate the success rate of the immediate postextractionimplants without incision or primary flap closure.Patients and Methods: The study included 34 patients in good general health,referred to the department of oral surgery in the specialized center of dentistry inBasra between August 2009 and July 2010, immediate post extraction implanttreatment 20(58.82 % ) female and 14(41.18%)male, aged 22 to 53 years withmean age 32.85 . Each patient had a tooth that required extraction, and each had atleast 4 mm of bone beyond the root apex. After tooth extraction, the implants wereimmediately placed without incision or flap elevation. Implant sites showing bonebone defects or bone fenestrations, were excluded from this study. The secondstagesurgical procedure was performed4 months after the first procedure. Thefollowing clinical parameters were evaluated at the time of implant placement andat second stage surgery: peri-implant radiolucency and marginal bone loss, whichwere evaluated radiographically.Results: The postsurgical healing period was uneventful for all patients. Soft tissueclosure over the implant sites was achieved in1to 3 weeks after surgery at all sites.At second stage surgery, no peri-implant bone defects were observed or detectedby probing. The soft tissue anatomy was considered clinically acceptable in allpatients.Conclusions: Immediate post-extraction implant treatment is an implant alternativewith a survival rate similar to that of the conventional technique for implantplacement and enables preserving both the bone structure and gingivalarchitecture.


Article
The Effect of Platelet-Rich Plasma on Osseointegration Period of Dental Implants

Authors: Mahammed W. Al-Gailani --- Thair Abdul-Lateef ثائر عبد اللطيف
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2015 Volume: 27 Issue: 4 Pages: 101-106
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: The preparation of Platelet-rich plasma (PRP) is minimally invasive way, simple, low cost to obtainnatural autologous growth factors and is now being widely used in different fields of medicine for its ability toincrease the regeneration potential of tissue. The aim of this study was to investigate the effect of local application ofautologous PRP gel on acceleration rate of osseointegration period by clinical assessment accomplished bydetermining the changes in implant stability during 3 months healing period using resonance frequency analysis(RFA).Materials and methods: A total of 28 dental implants were inserted in edentulous maxillae or mandibles of 13 patientsusing a split mouth design, i.e. each patient was received at least two dental implants at the same session, oneimplant was implanted in association with PRP which was placed locally in one site, to serve as PRP group, and theother implant was placed without PRP, to serve as a control group. Both groups were followed with repeated implantstability measurement by means of resonance frequency analysis at different time intervals (at the time of implantplacement, 8th week, and 12th week postoperatively).Results: There was no obvious statistically significant difference in mean ISQ between PRP and control groups (P >0.05) at baseline, 8 weeks, and 12 weeks postoperatively.Conclusions: Within the limitations of the present study, no appreciable clinical effect was observed to acceleratethe rate of osseointegration of sandblasted acid-etched endosseous dental implants when using topical applicationof autologous PRP gel into the prepared drill holes


Article
Mechanical evaluation of nano hydroxyapatite, chitosan and collagen composite coating compared with nano hydroxyapatite coating on commercially pure titanium dental implants

Authors: Sabreen W. Ibrahim --- Widad A. Al Nakkash
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2017 Volume: 29 Issue: 2 Pages: 42-48
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Dental implants act as infrastructure for fixed restoration to look like as a natural tooth.Osseointegration is a biological events and considered as a base for success of dental implant. The aim of this studyis to evaluate the bond strength between bone and Ti implant coated with mixture of nano hydroxyapatite-chitosancollagencompared with Ti implants coated with nano hydroxyapatite implanted in rabbit tibia, after different periodof implantation time (two and six weeks) by torque removal test.Material and methods: 36 screws of commercially pure titanium; 8mm in length and 3mm diameter , 18 screwscoated with mixture of nano hydroxyapatite-chitosan-collagen and18 screws coated with nano hydroxyapatite bydip coating. Structural characteristics was assessed by scanning electron microscope, and FTIR analysis. The screwswere implanted in 18 healthy adult male New Zeeland rabbits each tibia received one screw, right tibia receivedscrew coated with nano hydroxyapatite while left tibia received screw coated nano hydroxyapatite-chitosancollagencomposite. Removal torque test was done by torque meter to determine the highest torque valuenecessary to remove the implants from tibia bone after different period of time of implantation(2 and 6 weeks).Result: Nano hydroxyapatite-chitosan-collagen composite coating was resulting in higher torque removal value thannano hydroxyapatite coating for two periods of time.Conclusion: Concluded that addition of collagen and chitosan to nano hydroxyapatite was more efficient in rapidbone formation than nano hydroxyapatite only

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