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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
Comparison between flapless and flap dental implant surgery: A clinical and radiographic study
مقارنة بين جراحة زرع الأسنان بدون سديلة و بسديلة: دراسة سريرية وإشعاعية

Authors: Omed Ikram Shihab --- Ahmad Abdullah Haider --- Abduljaleel Azad Samad
Journal: Zanco Journal of Medical Sciences مجلة زانكو للعلوم الطبية ISSN: 19955588/19955596 Year: 2016 Volume: 20 Issue: 2 Pages: 1267-1271
Publisher: Hawler Medical Univeristy جامعة هولير الطبية

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Abstract

Background and objective: Flapless implant surgery has been suggested as a suitable treatment technique for implant placement, but limited information exists regarding the clinical conditions after flapless implant surgery. This study aimed to compare flapless implant surgery with traditional flap implant surgery clinically and radiographically.Methods: Sixty patients (23 males and 37 females) participated in the present study. The patients were divided into two groups, in the Group ‘A’ 30 implants were placed by traditional flap surgery and in Group ‘B’ 30 implants were placed by flapless implant surgery (punch technique). Clinical and radiographic examinations were carried out to assess the implants condition. Clinical examination included implant mobility which was assessed by using universal torque ratchet at the end of healing period (6 months). The periapical radiograph was carried out to assess marginal bone loss around the implants at three and six months after implantation.Results: Two implants failure were reported; one implant for each of the Group ‘A’ and ‘B’. There was no significant difference between the two groups with regard to the marginal bone resorption (P = 0.487). The success rate for both groups was 96.6%. The study showed a non-significant relation of age and gender with the success rate.Conclusion: The flapless implant surgery could offer advantages over the classic protocol and should have the potential to increase the patients’ acceptance of the procedure.


Article
Estimating the Stability of Orthodontic Micro-implant after Applying Orthodontic Force "An Experimental in Vivo Study"

Author: Estimating the Stability of Orthodontic Micro-implant after Applying Orthodontic Force "An Experimental in Vivo Study"
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2013 Volume: 13 Issue: 25 Pages: 154-161
Publisher: Mosul University جامعة الموصل

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Abstract

Aims: To evaluate weather micro-screw implants remain stationary or move against orthodontic forces during different healing periods (immediate loading, loading after 2 weeks and 4 weeks). Materials and Methods: Thirty micro-screw implants were implanted in 6 rabbits. These rabbits divided into 3 groups (2 in each group). The first group received loading immediaty after implantation. The second and third groups received loading after 2 weeks and 4 weeks of healing period respectively. The stabil-ity of these implants was measured using periotest device before and after loading. The data was ana-lyzed using descriptive statistic, Analysis of variance (ANOVA), Duncan Multiple analysis range test and student t-test. Result: Among the three groups, the first group having a significant greater stability of micro-screw implants immediately before and after loading and after 2 weeks of loading period. Conclusion: micro-screw implants can be loaded immediately after implantation with light orthodontic force; also these implants can be loaded after 4 weeks of healing period.


Article
Radiographic follow up for clinical cases of mandibular implant retained overdenture MIR-OD

Authors: Raghdaa K. Jassim رغداء جاسم --- Ibrahim K. Ibrahim
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2014 Volume: 26 Issue: 2 Pages: 7-11
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: The use of osseointegrated fixtures in dentistry has been demonstrated both histologically and clinicallyto be beneficial in providing long term oral rehabilitation in completely edentulous individual. Most patients sufferfrom denture instability; particularly with mandibular prosthesis, the use of dental implant will be benefit significantlyfrom even a slight increase in retention. The concept of implanting two to four fixtures in a bony ridge to retain acomplete denture prosthesis appealing therefore, as retention, stability and acceptable economic compromise tothe expanse incurred with the multiple fixture supported fixed prosthesis .Materials and methods in this study the sample were eight patients selected from a hospital of specialized surgery,these patient were wearing a mandibular implant retained over denture for two years these patients having MIR-ODwith Bar-clip, ball-cup and O- ring attachments. Preparative radiography was obtained for this patient from thecenter .these radiograph was taken to the patient at time of insertion. The second radiograph image was taken tothe patient after two years of function with prosthesis. .the scanned images were transfer to special folder in acomputer then analysis of bone loss done using Dimax software. After that an accurate calibrations of crestal bonemeasurement were analyzed for both groups of Radiography .Results it was appeared that the amount of bone loss in ball and bar designs (of mandibular Implant retainedoverdenture) were within the criteria of successful rate of bone loss during the period of examination, and there wasstatistically significant difference between both types of anchorage system.Conclusions The amount of bone loss was 0.1 mm after two years follow up, and it was within the acceptable limits ofbone lose. A significant difference appeared between both designs of MIR-OD, Ball and bar designs

Keywords

Radiograph --- implant --- overdenture --- Dimax


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 The Accuracy Of Modified Closed Tray Impression Technique For Multiple Angled Implants Using Condensation-Silicone Impression Material

Authors: Osama A Hammoodi --- Lamia T Rejab --- Wael T Alwattar
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2013 Volume: 13 Issue: 27 Pages: 413-422
Publisher: Mosul University جامعة الموصل

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Abstract

Aims: is to evaluate the linear distance accuracy of new modified closed tray impression technique of 6 angled implants and compared with open tray technique using condensation silicone impression material. Materials and Methods: : standard master model was prepared with six angled implants analogues (25 degree) buccaly and labial deviated .Two impression techniques were performed (open tray and new modified splinted closed tray) using condensation silicone impression material , then poured with die type IV stone. Capturing of the standard model and stone casts produced from both impression techniques. To perfume the measurement, first determine and label the reference points and reference line on standard model then measure the linear distances and angles with Matalab software program (7.12.0.635(R2011a). The entire measurements of the stone models were done by coordination way of implants analogues in sequence .Total number of impressions was ten, five impression for each technique. Statistically one sample t-test and two sample t-tests were performed to determine the significance differenc at p ≤ 0.05. Results: appeared there is no significance difference of the linear distances and angles of standard model and stone casts for open tray and a new modified closed splinted techniques. Conclusion: A new modified closed splinted technique is an accurate impression technique for multiple angled (6) implants as same as the open tray technique with condensation silicon, so a new technique is an accurate and easier technique to be carried out with multiple angled non- parallel implants.


Article
Assessment of rabbit mandibular bone response to different amalgam implants radiographically

Authors: Nazar Gh Jameel --- Mohammad S Suleiman --- Ragheed M Basheer
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2004 Volume: 4 Issue: 7 Pages: 20-27
Publisher: Mosul University جامعة الموصل

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Abstract

The radiograghical interpretations can give an excellent indication about the biological response of hard tissue like bone to different foreign materials imp-lanted within it. This clinical study was carried out to evaluate radiographically the bone reaction of four different types of Iraqi manufactured amalgam alloys (in addition to Degussa alloys as a positive control) implanted within holes prepared in the mandibular bone of the rabbit, and additional negative control group in which the hole remained empty without any implanted materials was also included. The evaluation was done by careful verification of the presence or absence of the radiolucency at the periphery of the implanted amalgam at three different time intervals, the response varied from radio-lucency to radioopacity depending on the reaction of bone to different implanted amalgam alloys. Accordingly, the biocompatibility of the amalgam alloy was deter-mined depending on the radiographic pic-ture of bone response at the margin of the implanted alloys. The results showed no significant difference in bone response among the different types of alloy used.

Keywords

Amalgam --- bone --- implant --- biocompatibility


Article
Comparison Study for the Quantity of Titanium Exist in Different Type of Dental Implant Alloy

Author: Jameel MA Sulaiman
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2013 Volume: 13 Issue: 27 Pages: 560-565
Publisher: Mosul University جامعة الموصل

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Abstract

The current study aims to compare alloys of dental implants and to find the ratio of titanium element (Ti) with different origins which are used by dentists in dental implant to restore the missing teeth. Materials and Methods: Three types of dental implants from Germany, Italy and Korea used in this study for statement the chemical structure of these alloys using (XRD: X-Ray Diffraction) (Model S1TurboSD LECE, BRUKER). Hardness, tensile strength, and flexibility coefficient tested by hardness measuring device Micro Hardness – AMSLER, Germany, 1978. The microstructure of samples obtained by Metrology Microscope (600X), ME-3125, UNION, 1978, Japan. Results: Different elements appeared in each alloy, and the titanium (Ti) ratio was the main one, where the Germany type (95.14%), Italy, (91.21%), while Korea type was the highest (95.21%). Tension Resistance in Germany model (755) N/(mm)2, Italian (781) N/(mm)2, and Germany (785) N/(mm)2. Hardness Vickers (HV) in Germany (277), Italy (285) and for Korean type (287). Modulus of elasticity, in Germany (107) Gpa, in Italy (115) Gpa. and in Korean (107) Gpa. The classification according to the American Society for Testing and Materials found in Germany Ti 3-2.5, Italy Ti6-2-1-1, and in Korean Ti 3-2.5. Conclusions: The Korean sample is best for three reasons the quantity of Titanium, Hardness Vickers (VH) and Tension Resistance are more. The Italy type is found better for Modulus Elasticity, while the Germany type is better in Microstructure. In general, and since, the three types have more than (90%) of Titanium there for all the types of dental implant are good against corrosion from acid and Hydrofluoric (HF).

Keywords

Dental Implant --- Titanium --- Alloy


Article
The Effect of Dental Implant Length and Di-ameter on the Stress Distribution at the Im-plant-Bone Interface of the Immediate Load-ing Implants: A 3/D Finite Element Analysis

Authors: Talal H Mohamad --- Umer Al-Adel
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2013 Volume: 13 Issue: 25 Pages: 44-51
Publisher: Mosul University جامعة الموصل

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Abstract

Aims: to evaluate the effect of implant length and diameter on the values and distribution of stresses of immediate loading implants by using three-dimensional (3D) finite elements (FE) analysis. Materials and Method: A 3-D FE model of an implant embedded in a block of bone was used in this study. The implant was LEADER/ ITALIA-Fix type which is specially designed for immediate loading. ANSYS V.12 program was used to build solid model of the implant and bone, and performing the finite element analysis. Two lengths of implant were used (11mm. and 13mm)., and two diameters (3.75mm. and 4.25mm.). Results: The results showed that the areas of maximum stress of all lengths and diameters are located at the neck of implants, the increase in the implant length from 11mm. to 13mm. leading to slightly increase in the stress at the implant-bone interface, while the increase in the diameter from 3.75mm. to 4.25mm. having no significant effect in increasing the value of stresses around dental im-plants. Conclusions: The increase in the implant length is negatively affect on stress values, but it leads to better dissipation of stresses around dental implant. The increase in the diameter having no obvious effect on stress values. However, it reduce the area of maximum stress at the implant neck


Article
Evaluation of Mechanical and Histological Significance of Nano Hydroxyapatite and Nano Zirconium Oxide Coating On the Osseointegration of CP Ti Implants

Authors: Majed Mohamed Refaat ماجد مجمد رفعت --- Thekra Ismael Hamad ذكرى اسماعيل حمد
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2016 Volume: 28 Issue: 3 Pages: 30-37
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Dental implant considers a unique treatment option for the replacement of missing dentition. The newtrend of implants is looking for materials which accelerate bone formation in bone implant interface and enhanceosseointegration to provide immediate loading directly after placement and decrease the time period which isdisturbs patients and uncomfortable. The aim of the study was to evaluate the effect of nano zirconium oxide (ZrO2)and nano hydroxyapatite (Hap) mixture coating of screw shaped commercially pure titanium (cpTi) implants onbond strength at the bone implant interface with torque removal test and histological analysis in comparison withnon coated implants.Materials and methods: Forty screws were machined from cpTi rods using a lathe machine. Then 20 screws coatedby electrophoretic deposition method by a mixture of nano hydroxyl apatite and nano zirconium oxide, while theother 20 screws remain uncoated. The tibia of 10 adult white New Zealand experimental rabbits was chosen asimplantation site, each rabbit tibia received 2 screws, one coated and the other uncoated. Torque removal test wasperformed to measure the torque required to remove the screw and histological analysis was performed to observethe new bone formation, after 2 and 4 weeks healing intervals.Results: Implant coated with a mixture of nano zirconium oxide and nano hydroxyl apatite showed a significantlyhigher removal torque values compared to uncoated one. There was more new bone formation with coatedimplants for both healing periods.Conclusions: Coating by electrophoresis considers a valuable process to coat metallic implants with a ceramicmaterial and to form a uniform composite layer of coating. Osseointegration improved at bone-implant interfaceassociated with the coated implants, which was illustrated by higher bone formation at the two intervals of time 2weeks and 4 weeks.

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