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Article
Tilted Implant Technique Solved Numerous Limitation of Straight Technique

Authors: Natheer A.Jassem نذير عايد علي --- Nabaa A. Ali نبأ علي
Journal: Tikrit Journal for Dental Sciences مجلة تكريت لعلوم طب الاسنان ISSN: 20731213 Year: 2016 Volume: 4 Issue: 2 Pages: 157-162
Publisher: Tikrit University جامعة تكريت

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Abstract

Present of important anatomical structures in both upper and lowerjaws make challenge during planning for implant procedures in theatrophic alveolar bone and to overcome this problem need boneaugmentation which still complex and difficult procedures make itnot accepted by large number of patient. In this study we spot lighton the teeth implant in an area where short bone or insufficientheight of alveolar ridge and inclined alveolar ridge so when weplace implant should be tilted either palatelly, mesially or distallyin bone around and we compare the success rate between angledplaced implant and up right placed implant. 61 patients came toclinic asking for tooth or teeth implant, 300 implant fixtures wereplaced in both upper and lower arch 203 implants were straightand 97were tilted. After 24 months follow up in the upper andlower alveolar arches of dental implant (97.54%) of uprightimplant were success and (97.94%) of tilted implant were success.Results indicate that the use of tilted implants effective and safemethod over bone augmentation procedures and nervetransferring.


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
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.


Article
A Comparative Study between Flapped and Flapless Surgical Techniques in Dental Implant Stability According to Resonance Frequency Analysis

Authors: Ali F. Hassan علي حسن --- Thair Abdul-Lateef ثائر عبد اللطيف
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2016 Volume: 28 Issue: 2 Pages: 92-97
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Recent implant surgical approach aims to cause less trauma, invasiveness and pain as much aspossible and to reduce patient and surgeon discomfort, time of surgery and time needed for functional implantloading. Flapless surgical techniques considered recently as one of the most popular techniques that may achievethese aims especially enhancing osseointegration and subsequently implant stability within less time than thetraditional flapped surgical technique. So this study aimed to make a comparison between flapped and flaplesssurgical techniques in resulted implant stability according to resonance frequency analysis RFA and in duration ofsurgical operation.Materials and methods: A total of 26 patients with 41 implants (one implant in the study group failed so it wasexcluded from the statistical analysis) were randomized into two groups: control group which involved 20 implantsinserted by conventional flapped surgical approach and study group which involved 20 implants inserted by flaplesssurgical approach. Estimation of alveolar bone was done for study group by bone (ridge) mapping procedure.Duration of surgical operation for each implant, Implant stability was measured at three time intervals (at surgery,two months and three months after surgery).Results: After three months interval of surgery the mean implant stability of the study (flapless) group achievedsignificant higher implant stability than control (flapped) group (P< 0.05) and the difference in measured implantstability was (5.05) implant stability quotient(ISQ). The time of surgical operation for implants in the study groupsignificantly was less than that of control group (P< 0.01).Conclusions: Implants placed with flapless surgical technique can produce high implant stability in shorter time andconsume prominently shorter time for surgical operation compared to those placed with conventional flappedtechnique


Article
EFFICACY OF SCREW EXPANSION FOR NARROW ALVEOLAR RIDGES IN DENTAL IMPLANT SURGERY, A CLINICAL STUDY

Authors: Thair A Hassan --- Ahmed M Abdulrahman
Journal: Basrah Journal of Surgery مجلة البصرة الجراحية ISSN: 16833589 / ONLINE 2409501X Year: 2016 Volume: 22 Issue: 2 Pages: 3-9
Publisher: Basrah University جامعة البصرة

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Abstract

Post-extraction alveolar ridge resorption is unavoidable phenomenon ending with insufficient ridge width. Bone grafting, osteotome ridge expansion and ridge splitting were used to expand narrow ridges but they are either expensive, associated with higher morbidity or require longer treatment time. Therefore the use of screw expansion was introduced as an option for managing deficient ridge width enhancing ridge density, facilitating immediate implant placement and is not associated with potential complication. The aims were to evaluate of the efficacy of bone screw expanders in widening narrow ridges, measuring bone gain and assessing possible complications. This clinical prospective study was performed between October 2015 & October 2016. Twenty four patients with 45 potential sites were involved. Preoperative clinical examination and radiographic assessment with OPG were performed for all cases. ITL bone expander kit was used after initial osteotomy to expand the narrow ridges. Osstell ISQ was utilized to measure the primary implant stability. After 16 weeks, patients were recalled again for the second stage surgery and Osstell was used again to measure the secondary stability. Patients then were referred to the prosthetic department for completion of final prosthesis after sufficient time for healing abutments in place. Twenty four patients were participated with 45 implants inserted. Female to male ratio was 2.4:1 with a mean age of 43.12 year ranging between 18–65 years. The original mean bone width (Mean±SD) prior to expansion was 3.3±0.56 mm & after expansion associated with dental implant insertion was 5.09±1.05 mm and there was statistical significance in possible mean bone gain by 1.79 mm from baseline. The overall survival rate was 91.1% with the anterior parts of both jaws having the highest percentages. Intraoperative complications involved cracks which were observed in 15 sites (39.5%) and cortical malfractures which were seen in 7 sites (15.6%). In conclusion, screw expansion is an easy solution for expanding narrow ridges with least possible complications and allow for simultaneous implant placement.


Article
Immediate Implant Placement in Fresh Extraction Socket

Authors: Mohammed Majid Abdulmunem محمد مجيد عبد المنعم --- Jamal Abid Mohammed جمال عبد محمد
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2016 Volume: 28 Issue: 4 Pages: 103-110
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: In the traditional protocol, the patient should wait after extraction up to six months to place the dental implant in healed bone, this waiting time accompanied by varying degrees of alveolar bone changes. In order to overcome these problems, immediate implant placement in the fresh extraction socket was introduced. The Aim of this study was to evaluate the outcome of the immediate implant placement utilizing Resonance Frequency Analysis (RFA) to quantify implant stability and osseointegration.Materials and Methods: A total of (23) patients participated in the study, receiving (44) implants placed in the sockets of teeth indicated for extraction. Clinical and radiographic preoperative assessment was accomplished for each patient, β-TCP (combined with collagen membrane) was used to fill gaps ≥ (2 mm) and to repair bone defects. Implant stability quotient (ISQ) values were measured for the implants at baseline and at 16 weeks. Postoperative clinical and radiographic evaluation was applied for each patient.Results: A total of (22) patients received (41) implants completed the follow-up period, all these implants survived (100% survival rate) with no signs and symptoms of failure. The mean of ISQ value at baseline was (65.32±9.50), the mean of ISQ value at 16 weeks was (69.78±7.15), paired samples statistic showed high significant increase in the implant stability (P<0.01). Application of guided bone regeneration (GBR) showed no significant difference on ISQ value at baseline and at (16 weeks), but ISQ values increased significantly in GBR cases during the healing period.Conclusions: Immediate implant placement is a predictable treatment approach; it has the benefit of reducing treatment time and the numbers of surgical procedures when careful preoperative examination and appropriate intraoperative protocol is applied.


Article
The Measurements of Maxillary Alveolar Bone Density at 13- 15 Years Age by Using Spiral Computerized Tomography

Authors: Azhar A.Farage --- Fakhri A. Al Fatlawi فخري عبد علي الفتلاوي
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2016 Volume: 28 Issue: 2 Pages: 103-107
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Bone density is a major factor that affect mini implant primarily stability; no Iraqi studies have evaluatedbone density related to mini-implant placement for orthodontic anchorage at age 13 -15 years. The present researchaims to evaluate gender, side and site differences in the bone density at various orthodontic implant sites for themaxillary alveolar bone.Materials and methods: Twenty nine individuals (16 males and 13 females) had subjected to clinical examination,then 64-multislice computed tomography scan data were evaluated and bone density was measured in Hounsfieldunit at 21 points (9 points for each side and 3 points between the right and left central incisors) .Results: The results obtained showed that there are no significant differences in bone density between males andfemales and between the left and right sides were found. There was no significant differences in bone densitybetween the maxillary buccal cortical bone and the palatal cortical bone were generally except that at lateralincisor and canine point where the palatal side had higher bone density than buccal side. The mean bone density ofthe cancellous bone in the anterior part was higher than that in the posterior of the maxilla.Conclusions: When orthodontic, mini implant are indicated, no gender and side difference affect the success rateregarding bone density


Article
Natural products extract effect on bone integration around orthodontic micro-implant: An experimental study
تستخلص المنتجات الطبيعية تأثيرها على تكامل العظام حول الغرس الجزئي لتقويم الأسنان: دراسة تجريبية

Authors: Ali Rajih Al-Khatib --- Mustafa Muath Hamed Al-Sultan
Journal: Zanco Journal of Medical Sciences مجلة زانكو للعلوم الطبية ISSN: 19955588/19955596 Year: 2016 Volume: 20 Issue: 1 Pages: 1219-1227
Publisher: Hawler Medical Univeristy جامعة هولير الطبية

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Abstract

Background and objective: Bone integration around orthodontic implant is a matter of concern for their stability. This study was conducted to estimate calcium and phosphorous level in after insertion of orthodontic implant. Methods: Twenty five white mature male rabbits, classified into 5 groups: one control and four experimental, with five rabbits for each group were used. Fifty orthodontic implants were used, 2 micro-implant for each tibia. Four different natural products extract were used in this study that included Curcumin 15mg/kg, Nigella Sativa oil 0.25 ml/kg, Cissus Quadrangularis 500mg/kg and Virgin Coconut oil 1 ml/kg. Each product was given to certain experimental group started from the day of implant insertion for four weeks healing period. The biochemistry evaluation was conducted involving calcium and phosphorus level in serum. Results: Significant difference in serum calcium levels were detected between Curcumin, Nigella Sativa oil from side and control group on the other side. Conclusion: Systemic Curcumin and Nigella sativa oil may be used for possibly enhancing bone response around orthodontic implant as reflected by lower serum calcium level as compared to control group.


Article
Assessment of the fracture strength of straight and pre-angled (17°) zircon implant abutments supported CADCAM zerconium restoration: An in(vitro study).

Authors: Zardasht N. Abdulghafoor --- Talal H. Al-salman --- Allaa Y. Daham
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2016 Volume: 16 Issue: 28 Pages: 77-83
Publisher: Mosul University جامعة الموصل

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Abstract

Aims :evaluate the effect of abutment angulation on fracture strength of pre-fabricated zircon implant abutment supported CADCAM zircon crown. Material and methods: Ten analog with 3.75×14mm were placed into resin blocks divided in to 2 groups: group A (n=5) parallel to long axis and group B (n= 5) fixed at angulation (17°) to long axis. Then ten abutments were tightened to 25 N/cm2. Ten full anatomic zircon (CAD/CAM) crowns constructed as upper right central incisor: 5 on each group. After luting all crowns with dual cure resin-based luting, all samples passed to artificial aging using thermocycling machine, 500 cycles at (5 to 55 C°±2) degree. Then the load was applied by universal testing machine at 30 degree to the long axis until fracture occurred. Results: Statistical analysis showed that the implant abutment angulations significantly (p < 0.05) reduced the fracture resistance of zircon implant abutment. Conclusions: Within the limitation of this in vitro study it may be concluded that: the fracture strength of zircon implant abutment supported CADCAM zircon crown is significantly reduced in respect to the angulation fromstraight to angulated (17°) zircon abutment.


Article
Effect of smoking on hard palate bone density
تأثير التدخين على كثافة عظم الحنك الصلب

Author: Zahraa M. Al- Fadily
Journal: journal of kerbala university مجلة جامعة كربلاء ISSN: 18130410 Year: 2016 Volume: 14 Issue: 1 Pages: 112-119
Publisher: Kerbala University جامعة كربلاء

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Abstract

Background: The bone density of hard palate is key factor for success of palatal mini-implant. Smoking is an important determinant of osteoporosis.Materials and method: Sixty males were selected with age range 20-39 years and divided into two groups according to smoking; smokers group (30), and nonsmokers (control) group (30). The measurements of hard palate bone density by HU (unit used to measure radiodensity of bone on CT scan) were made at 20 sites at the intersection of five anterioposterior and four mediolateral reference lines using Philips, Brilliancetm, 64-multislice computed tomography scanner software.Results: The results that were obtained showed that there was a statistically significant difference between the two groups in bone density at most areas of hard palate. The comparison between the two groups in the overall cortical bone density showed a highly statistically significant difference. The comparison between the two groups in the overall cancellous bone density showed a statistically significant difference.Conclusion: Hard palate bone density decreased by smoking. In spite that, orthodontic mini-implants can be safely used for smoker persons in hard palate.

الخلفية: كثافة عظم الحنك الصلب عامل مهم لنجاح الزرعات التقويمية الحنكية. التدخين مسبب رئيسي لهشاشة العظام.المواد والادوات: شملت العينة 60 ذكر تتراوح أعمارهم بين٢٠- 3٩ سنة. قسمت العينة الى مجموعتين, المدخنين (30) وغير المدخنين (30). كثافة عظم الحنك الصلب قيست ل٢٠ موقع عند تقاطع خمس خطوط إشارة أمامية خلفية مع أربع خطوط إشارة قريبة بأستخدام برامجيات المفراس الحلزوني ٦٤- متعدد المقاطع لشركة فلبس المتألقة. النتائج: النتائج أظهرت أن هنالك فروق ذات دلالة إحصائية في كثافة عظم الحنك الصلب بين المدخنين وغير المدخنين في معظم المناطق. مقارنة كثافة العظم القشري الكلية بين المجموعتين بينت فروق ذات دلالة إحصائية عالية . مقارنة كثافة العظم الإسفنجي الكلية بين المجموعتين بينت فروق ذات دلالة إحصائية. الاستنتاج: كثافة عظم الحنك الصلب تتناقص بالتدخين. بالرغم من ذلك, الزرعات التقويمية من الممكن وضعها للمدخنين في عظم الحنك الصلب.

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