K Sohrabi

Mashhad University of Medical Sciences, Mashad, Razavi Khorasan, Iran

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Publications (4)2.17 Total impact

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    ABSTRACT: The aim of the present retrospective study was to evaluate the local effects of smoking on periodontium and to assess the patterns of periodontitis (pocket depths and attachment loss) in smokers and non-smokers. In this study, records of 126 non-smokers and 51 smokers (≥ 5 cigarettes/day) periodontitis patients were evaluated and probing pocket depth (PPD), clinical attachment level (CAL) and bleeding on probing (BOP) data were collected from clinical patients records. Patients' data were subject to two sample t-tests to assess the difference between the groups and to analysis of variance using the generalized linear model to seek associations between smoking and site positions, age and clinical parameters. The difference between CAL of smokers and non-smokers was greatest at the anterior maxillary palatal sites (P = 0.002) and reached 1 mm. When the effect of different site positions as well as smoking as a between subject variable and age as a co-variate on the attachment level measurements were assessed using analysis of variance, significant effects for smoking, jaw (lower versus upper) and anterior-posterior position as well as age were detected. No significant interactions were found between smoking and any of the three position variables. Lack of interaction between smoking and any of the three position variables indicates that the destructive effects of smoking on the periodontal tissues maybe mainly from systemic side-effects and almost independent of the site position within the mouth, although some additional local effects may be present in areas such as anterior palatal sites.
    International Journal of Dental Hygiene 02/2011; 9(4):291-5. · 0.80 Impact Factor
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    ABSTRACT: This study assessed the influence of current oral contraceptive pills on periodontal health in young females. Seventy women ranging in age from 17 to 35 years (mean 24 years) had a comprehensive periodontal examination. Their current and previous oral contraceptive pill use was assessed by a questionnaire. A periodontal assessment was performed that included recording the following: plaque index, gingival index, probing depth, and attachment level at six sites per tooth. The periodontal health of women taking birth control pills for at least two years was compared to that of women not taking an oral contraceptive. The control and test groups were matched for socioeconomic status, age, oral habits, occupation, and educational levels. Although there was no difference in plaque index levels between the two groups, current oral contraceptive pill users had higher levels of gingival inflammation and bleeding on probing. However, no significant differences were found regarding mean probing depths and attachment loss between the two groups. As birth control policies are advocated by most countries, and because oral contraceptives are the most widely used method for birth control, a need exists to assess the effects of oral contraceptives on the periodontal health of young women. Although additional studies are needed to better understand the mechanism of OC-induced gingivitis, female patients should be informed of the oral and periodontal side effects of OCs and the need for meticulous home care and compliance with periodontal maintenance.
    The journal of contemporary dental practice 05/2010; 11(3):033-40.
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    ABSTRACT: The aim of this study was to compare the clinical outcomes of applying Bio-Oss, an anorganic bovine bone xenograft (control group) to the combined use of Bio-Oss and Bio-Gide (a bioabsorbable collagen membrane) (test group) in human mandibular Class II furcation defects. A total of 18 furcations (8 tests and 10 controls) in 14 patients suffering from chronic periodontitis were treated in this randomized clinical trial. Open vertical and horizontal furcation depths (OVFD and OHFD), vertical and horizontal clinical attachment levels (VCAL, HCAL), probing depth (PD) and free gingival marginal level (GML) were among the clinical parameters measured prior and six months after treatment, at re-entry surgery. The data were analysed by statistical tests while a p value less than 0.05 was considered significant. At the surgical re-entry, the mean reduction for OVFD of the control and test groups was 1.9 +/- 1.3 and 2.1 +/- 1.0, and for OHFD 2.1 +/- 0.7 and 2.4 +/- 1.3, respectively. The control and test treatments resulted in significant reductions in PD, VCAL and HCAL measurements at re-entry but there was no statistically significant difference between the two treatments in all soft and hard tissues measurements. This clinical trial failed to demonstrate the superiority of the combined use of Bio-Gide and Bio-Oss to the use of Bio-Oss alone, although both therapies resulted in significant gains in attachment level and bone fill.
    Australian Dental Journal 10/2009; 54(3):220-7. · 1.37 Impact Factor
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    ABSTRACT: Introduction: The use of radiotherapy, alone or in conjunction with surgical resection, is common in treating head and neck tumours. However, ionising radiation induces unavoidable changes in the sur-rounding normal tissues, causing severe complications. Therefore, we decided to study different effects of radiotherapy on gingiva and oral mucosa.
    Journal of Radiotherapy in Practice 12/2008;