Browsing by Author "Peck, M. Thabit"
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Item The antimicrobial activity of four herbal based toothpastes against specific primary plaque colonizers(University of the Western Cape, 2007) Peck, M. Thabit; Stephen, L.X.G.; Africa, C.; Faculty of DentistryAim: To determine whether there was any significant difference in the antimicrobial activity of 4 herbal toothpastes against cultures of 3 primary plaque colonizers (Streptococcus mutans, Streptococcus sanguinis and a non-specific alpha;-heamolytic streptococcus).Item The antimicrobial efficacy of three chlorhexidine mouth rinses: an in-vitro analysis(University of the Western Cape, 2014) Abdalrahman, Basheer Mohamed; Holmes, Haly; Peck, M. Thabit; Basson, NicholasDifferent chlorhexidine (CHX) preparations and formulations are available in local markets. Some preparations contain anti-discoloration systems (ADS), additional antimicrobials like cetylpyridinium chloride (CPC), or alcohol. The aim of this study was to compare the antimicrobial efficacies of 3 different CHX preparations (Corsodyl®, Curasept® and GUM® Paroex®)Item Comparison of retentive properties of two attachment systems in mandibular overdentures - an in vitro study(2013) Satti, Asim Alsadig; Patel, N.; Peck, M. ThabitAim: The aim of this study is to test and compare the retentive properties of two types of attachments i.e. Locator® and OT equator in a mandibular overdenture placed over 2 implants.Item The effect of storage time on the platelet concentration of Choukroun's platelet rich fibrin (PRF)(University of the Western Cape, 2011) Peck, M. Thabit; Stephen, L.X.G.; Hiss, DWound healing is a complex process characterised by the repair and reconstitution of lost or damaged tissue. By the mid 1990s, several methods were proposed to enhance wound healing of surgical sites by introducing high concentrations of human platelets to these areas. In the early 21st century, Choukroun et al (2006b) introduced a new type of platelet concentrate that was devoid of any additives, and required no specialised equipment for its production. This concentrate was termed Platelet-rich fibrin (PRF) and although various aspects of this biomaterial had been studied, very little is currently known about its storage properties. Aim: To determine whether storage time had a significant effect on the platelet concentration of Choukroun’s PRF Method: A total of 30 patients were enrolled into the study. Three blood samples of 10ml each were drawn from each patient. Two of the blood samples (Group A and Group B) were centrifuged to form PRF. The third sample was used to measure the baseline blood platelet concentration and was therefore not centrifuged. After PRF had formed in both test groups, it was removed from the test tubes at 2 different times i.e. immediately after centrifuge (Group A) or after 60 min of storage in the blood collecting tube (Group B). The remaining blood was then tested for platelet concentration and compared to each other and the baseline reading. Results: 14 males and 16 females participated in the study (average age 41.7 years). A mean blood platelet concentration of 282.8 ± 58.3 × 109/L was recorded for the baseline reading. Group A had a mean blood platelet concentration 7.9 ± 3.03 × 109/L. Group B had a mean blood platelet concentration of 4.0 ± 1.93 × 109/L. A statistically significant difference was seen between Groups A and B (p < 0.0001). Conclusions: Storage time has a significant effect of the platelet concentration of PRF. If stored over a period of 60 min, the platelet concentration of PRF increases. Further research is required to determine whether this finding is clinically significant.Item A radiographic analysis of the anterior palate as a donor site for bone harvesting(University of the Western Cape, 2015) Abofatira, Mohamed Farag; Nortje, C.J.; Peck, M. ThabitAutologous bone grafting in conjunction with dental implant therapy is a well-accepted procedure in oral and maxillofacial rehabilitation. A variety of intraoral donor sites, such as the mandibular symphysis, the mandibular ramus and the maxillary tuberosity have been used in oral and maxillofacial reconstruction. However these sites are associated with complications. In order to reduce these complications, the anterior palate has been proposed as a potential donor site. However, the scientific literature in this regard is sparse, and larger studies are required to investigate the clinical potential of this proposed site. Aim: To determine the volume and density of available bone in the anterior palate that may be used for bone harvesting using cone-beam computed tomography (CBCT) in a select South African population. Materials and methods: One hundred previously acquired CBCT scans taken at the Diagnostic and Radiology Department of Tygerberg Oral Health Centre were analyzed for the required data. These were all acquired from a single CBCT machine (Newtom VGI®, Verona, Italy). The study sample included 52 females and 48 males ranging from ages 20 years to 80 years. The CBCT scans were divided into 3 different age groups. The first age group was between the ages of 20 and 39 years, the second age group was from 40 to 59 years and the third age group was ≥ 60 years. The volume and density of the anterior palate of the different age groups were analyzed using specific criterion. CBCT specific software (Simplant Pro Crystal®) Dentsply implants, Mannheim, Germany was used to standardize the data collection. All data was stored in a Microsoft Excel spreadsheet (Microsoft Corporation, Washington, USA). Results: The mean volume of the anterior palate in this study was 2.11 ± 0.55 cm3, with a minimum volume of 1.04 cm3 and a maximum volume of 3.82 cm3. There was no significant difference in the volume and density of the anterior palate between different age groups and no significant difference in the volume between males and females (p value = 0.227). Conclusions: The anterior palate affords a considerable amount of bone volume which is similar or even more than other intraoral donor sites. The anterior palate is a potential donor site for bone harvesting and CBCT may be regarded as an ideal tool to analyze the amount of bone available for harvesting.