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Advanced Periodontology and Implant Dentistry - Volume:1 Issue: 1, Dec 2009

Journal of Advanced Periodontology and Implant Dentistry
Volume:1 Issue: 1, Dec 2009

  • تاریخ انتشار: 1388/10/11
  • تعداد عناوین: 9
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  • Page 4
  • Masoumeh Faramarzie, Adileh Shirmohammadi, Atabak Kashefimehr, Ardeshir Lafzi Pages 5-10
    Background and aims. Smoking is a risk factor for periodontal disease. It has been documented that smoking impairs response to periodontal therapy. The aim of this study was clinical comparison of treatment response patterns following non-surgical periodontal therapy in non-smokers (NS) and passive smokers (PS) with chronic periodontitis.Materials and methods. Eighty adult patients (40 NS and 40 PS) with mild to moderate periodontitis were treated with full-mouth subgingival scaling and root planing. Clinical parameters evaluated included probing depth, clinical attachment level, bleeding on probing, and plaque index, collected at baseline, and at 3- and 6-month intervals.Results. In comparison with the baseline data, both groups showed statistically significant improvements in all the parameters after 3 and 6 months. Full-mouth plaque and bleeding scores at 6 months did not demonstrate any significant differences between the two groups (P = 0.65). However, the inter-group differences after 6 months were statistically significant with regard to probing depth and clinical attachment level measurements (P = 0.001 and P < 0.0005, respectively).Conclusion. Results demonstrated that response to non-surgical periodontal therapy in non-smokers is better than that in passive smokers.
  • Bijan Heidari, Hossein Bisadi, Behnam Heidari, Mahdi Kadkhodazadeh Pages 11-19
    Background and aims. Finite elemental analysis is an efficient technique for investigating biomechanical interactions of different implant designs. The purpose of this study was to investigate the effect of cylindrical and tapered implants with different degree of tapering and similar lengths on the stress and strain distribution in the bone and implant.Materials and methods. One cylindrical and five types of tapered implants with degrees of tapering from 0.02 to 0.16 were modeled to this study. The implant material was grade IV titanium and abutment was grade ELI titanium. The bone model used comprised of compact and spongious bone assumed to be homogeneous, isotropic and linearly elastic.Results. With increased degree of implant tapering, the von Mises stress and strain increased in the bone. However, at the neck of implant, the most sensitive area, with increase in degree of tapering, both stress concentration and strain decreased. The lowest stress and strain were generated in the most tapered implant.Conclusion. Based on the results, cylindrical screw implant generated the lowest maximum von Mises stress in cortical bone and tapered implant type 5 with highest taper degree generated the highest maximum von Mises stress.
  • Reza Amid, Mahmood Sovaid, Hamide Saadati Pages 20-27
    Background and aims. The aim of the present study was to evaluate the result of full scaling and root planning with and without systemic administration of doxycycline on periodontium and metabolic control in type 2 diabetes mellitus (DM) patients.Materials and methods. Thirty patients with type 2 DM with poor glycemic control were selected and randomly assigned into two groups. Case group received scaling and root planning and doxycycline (SRP + Doxy) and control group received only SRP. Probing pocket depth (PD) and bleeding on probing (BOP) as the most important indicators for periodontal health were recorded at baseline, 3- and 6-month follow-up. Fasting blood sugar (FBS), glycated hemoglobin (HbA1c), total cholesterol (TC), and triglyceride (TG) were analyzed before and after periodontal treatments.Results. A statistically significant reduction was observed for PD and BOP for the treatment groups. HbA1c levels in SRP group decreased more significantly than SRP + Doxy group (9.15 ± 0.76 to 7.73 ± 1.41% and from 8.41 ± 0.49 to 7.88 ± 1.77%, respectively).Conclusion. Non-surgical periodontal treatment is associated with improved periodontal health and glycated control in DM type 2 patients and could be considered as an important part of the diabetic patient care.
  • Seyed Ali Banihashemrad, Abbas Shirdel, Samira Pakro Pages 28-30
    Background and aims. Liver cirrhosis and other chronic liver diseases are sometimes detected with oral manifestations, and in recent years, cirrhosis has been recognized as a potential predisposing condition for periodontal disease. The purpose of this study was to determine the periodontal parameters in cirrhotic patients.Materials and methods. In this study, twenty hospitalized patients with liver cirrhosis (case group) and 20 healthy individuals (control group) were selected and matched by age, gender, oral hygiene, and smoking habit. All subjects were non-alcoholic. The diagnosis of liver cirrhosis was confirmed histologically, and no other systemic diseases were present. Periodontal indices including probing depth (PPD), clinical attachment level (CAL), bleeding points index (BPI), and plaque index (PI) were recorded in both groups. The data were analyzed using Mann-Whitney and t-test.Results. Mean CAL in case and control groups were 5.05 ± 0.33 mm and 4.90 ± 0.32 mm, respectively (P > 0.05). Mean PPD was 4.37 ± 0.20 mm in case and 4.28 ± 0.18 mm in control group (P > 0.05). Mean BPI was found to be 21.1% and 19.9% in the case and control group, respectively (P > 0.05). Mean PI was 21.55 in case and 19.45 in control subjects (P > 0.05).Conclusion. According to the results of this study, it could be concluded there are no significant differences between cirrhotic and healthy subjects in terms of periodontal disease parameters.
  • Mohammad Taghi Chitsazi, Reza Pourabbas, Farnaz Jafari, Hossein Jabari Khameneh Pages 31-35
    Background and aims. One important treatment objective of periodontal therapy is the removal of bacterial deposits and the arrest of disease progression. The aim of the present study was to compare subgingival plaque removal using hand curettes, magnetostrictive ultrasonic scalers and air-polishing devices (APD) with and without NaHCO3 abrasive powder. Materials and methods. In this controlled randomized clinical trial, all surfaces of 60 single-rooted hopeless teeth with untreated periodontitis were treated either by hand curettes, magnetostrictive ultrasonic scalers or APD with or without NaHCO3 abrasive powder. The teeth were extracted and stained in methylene blue in water solution. Digital images were captured under a microscope and depth of plaque removal was measured with image processing software. ANOVA and correlation tests were applied to data. Results. The mean comparison showed that using APD with water alone failed to achieve adequate plaque removal. Subgingival plaque removal in the lingual surface was significantly lower in all investigated instruments (P < 0.001). The mean cleansing depths of curettes, ultrasonic scalers and APD with NaHCO3 powder were 4.6, 6.0 and 4.2 mm, respectively. Conclusion. The effectiveness of different instruments is not identical for different sites. Therefore, the efficiency of these instruments should be adjusted for various clinical applications.
  • Amir Reza Rokn, Amir Ali Reza Rasouli Ghahroudi, Abolhasan Mesgarzadeh, Seyed Asghar Miremadi, Mohammad Javad Kharrazi Fard Pages 36-42
    Background and aims. Implant stability of different designs have shown to be variable. The aim of this study was to evaluate the stability changes as a reflection of early healing around roughened-surface implants in human using resonance frequency analysis (RFA). Materials and methods. 153 Branemark Replace tapered Ti-uniteTM implants in 68 patients were placed in the maxilla or mandible. Bone type was classified into one of 4 groups according to Lekholm and Zarb index. RFA was used for direct implant stability measurement on the day of implant placement and at 14, 30 and 60 days after placement. Results. No early failure occurred. The lowest primary stability measurement was observed in type 4 bone. Student t-test for comparison of bone groups at each time point revealed no significant difference between implant stability in all bone types (P > 0.05). In testing the effect of implant length and diameter with time using the mixed model ANOVA according to implant length, there was not any significant difference between groups (P > 0.05); however, implant diameter showed a significant effect on implant stability. There were no significant differences in implant stability between genders (P > 0.05). Conclusion. According to the results, pattern of stability changes are not different among different bone types.
  • Masoumeh Faramarzie, Amir Reza Babaloo, Sina Ghertasi Oskouei Pages 43-47
    Background and aim. Presence of maxillary septa has been known to be a complicating factor for sinus elevation procedure. This study was aimed at detecting the prevalence, location and height of antral septa in edentulous and dentate Iranian patients scheduled for sinus elevation procedure.Materials and methods. A total of 132 sinuses in 66 patients (39 male and 27 female) aged 34-73 years were evaluated through a computed tomography scan analysis.Results. The prevalence of one or more septa was 35.52% (27/76) for edentulous and 21.42% (12/56) for dentate patients (overall 29.54% [39/132]). The prevalence of septa was not significantly different between males and females. Antral septa were found in the middle (53.84% [21/39]), anterior (30.76% [12/39]), and posterior parts (15.38% [6/39]). The mean heights of septa were 6.52 ± 3.87 mm, 7.58 ± 3.56 mm and 5.33 ± 4.23 mm in medial, lateral and middle parts of maxillary antrum, respectively.Conclusion. Antral septa may be present in any area of the maxillary sinus with variable prevalence among populations.
  • Sara Soheylifar, Mohammad Vahedi, Mahdi Kadkhodazadeh, Mohsen Jali Bidgoli Pages 48-50
    Periodontal findings of a 19-year-old female with previously undiagnosed acute myeloid leukemia (AML) are presented. Intra-oral examination revealed generalized gingival enlargement, inconsistent with the amount of calculus. Chemotherapy for choriocarcinoma was a prominent note in history. Ruling out other etiologies, second CBC and peripheral blood smear results confirmed AML. Six week after chemotherapy for AML, patient received scaling and root planning and the gingival enlargement was noticeably reduced.