Browsing Research Publications by Author "Grobler, Sias Renier"
Now showing items 1-20 of 22
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Antimicrobial activity of two South African honeys produced from indigenous Leucospermum cordifolium and Erica species on selected micro-organisms
Basson, Nicolaas; Grobler, Sias Renier (BioMed Central, 2008)Background: Honey has been shown to have wound healing properties which can be ascribed to its antimicrobial activity. The antimicrobial activity can be effective against a broad spectrum of bacterial species especially ... -
A clinical study of the effectiveness of two different 10% carbamide peroxide bleaching products: a 6-month followup
Grobler, Sias Renier; Majeed, Abdul; Hayward, Roche; Rossouw, Roelof; Moola, Mohamad H.; van Wyk Kotze, Theuns (Hindawi Publishing Corporation, 2011)The purpose of this study was to evaluate the efficacy of two different 10% carbamide peroxide bleaching products just after treatment and after a 6-month follow-up period. Methods. Two 10% carbamide peroxide products ... -
A comparative study to determine the shock absorption ability of two popular mouth guards available on the South African market
Mohamed, Nadia; Grobler, Sias Renier; Basson, N. J.; Osman, Yusuf Ismail; Mulder, Riaan (Electronic Doctor (E-Doc) Publishers & SADA, 2017)It is expected that most mouth guards will provide some level of protection to teeth. In this study a device was developed to measure the relative impact absorption of two different mouth guards (Proform, Type III ... -
Comparison of colour components between maxillary central incisors - an in vivo study
Moodley, Desi; Grobler, Sias Renier; Osman, Yusuf Ismail; Kotze, T.J.v.W. (South African Dental Association, 2015)Objectives: The purpose of this study was to determine the relationship of colour in the CIE L a b scale between the maxillary central incisors. Methods: The colour of the maxillary central incisors of 83 patients was ... -
Cytotoxicity of seven recent dentine bonding agents on mouse 3T3 fibroblast cells
Olivier, Annette; Grobler, Sias Renier; Osman, Yusuf Ismail (Scientific Research Publishing, 2012)Today it is generally accepted that most bonding agents are cytotoxic. In this study the relative cyto-toxicity of seven recent dentine bonding agents on mouse 3T3 fibroblast cells were investigated. Materials and Methods. ... -
Effect of four different Opalescence tooth-whitening products on enamel microhardness
Majeed, Abdul; Grobler, Sias Renier; Moola, Mohamad H.; Rossouw, Roelof; van Wyk Kotze, Theuns (South African Dental Association, 2008)OBJECTIVES: The purpose was to evaluate the effect of various Opalescence tooth-whitening products on enamel. METHODS AND MATERIALS: Enamel blocks were exposed to Opalescence PF 10% Carbamide Peroxide (n = 10), Opalescence ... -
Effect of four over-the-counter tooth-whitening products on enamel microhardness
Majeed, Abdul; Grobler, Sias Renier; Moola, Mohamad H.; Oberholzer, Theunis (South African Dental Association, 2011)OBJECTIVES: This in vitro study evaluated the effect of four over-the-counter tooth-whitening products on enamel microhardness. METHODS: Fifty enamel blocks were prepared from extracted human molar teeth. The enamel ... -
Effect of various tooth-whitening products on enamel microhardness
Grobler, Sias Renier; Majeed, Abdul; Moola, Mohamad H. (South African Dental Association, 2009)Objectives: The purpose was to evaluate the effect of various tooth-whitening products on the South African market, containing carbamide peroxide (CP) or hydrogen peroxide (HP), on enamel microhardness. Methods: Enamel ... -
Guidelines for the selection of tooth whitening products amongst those available on the market
Basson, Reneda; Grobler, Sias Renier; van Wyk Kotze, Theuns; Osman, Yusuf Ismail (South African Dental Association, 2013)Background: Several tooth whiteners are available on the market, and the ideal choice should be determined by ef ficacy and optimal clinical results. Objectives: The purpose of this study was to compare the reported ... -
In vivo spectrophotometric assessment of the tooth whitening effectiveness of Nite White 10% with amorphous calcium phosphate, potassium nitrate and fluoride, over a 6-month period
Grobler, Sias Renier; Majeed, Abdul; Moola, Mohamad H.; Rossouw, Roelof; van Wyk Kotze, Theuns (Bentham Science Publishers, 2011)To clinically evaluate the effectiveness of Nite White 10% carbamide peroxide with amorphous calcium phosphate, potassium nitrate and fluoride over a 6-month follow-up period. Nite White was applied nightly for 14 days, ... -
Insights into a comparison of three different cements on the push-out bond strength of a glass-fibre post
Grobler, Sias Renier; Patel, Naren; Fortuin, A.; Moodley, Desi (SADA, 2017)One of the main causes of failure of fibre posts is debonding of the post in the prepared post space. The adhesive properties of total etch adhesive cements were assessed by comparing the performance of cements using ... -
Insights into chitosan hydrogels on dentine bond strength and cytotoxicity
Perchyonok, Tamara; Grobler, Sias Renier; Zhang, Shengmiao; Olivier, Annette; Oberholzer, Theunis (Scientific Research Publishing, 2013)Contemporary dental adhesives show favorable im- mediate results in terms of bonding effectiveness. However, the durability of resin-dentin bonds is their major problem. Materials and Methods: Preparation of 3 chitosan-antioxidant ... -
Insights into the clinical effectiveness of whitening products - Part 1: Dentist-supervised-at-home bleaching product
Grobler, Sias Renier; Osman, Y. (SADA, 2016)This section of the report is about the success of a dentist-supervised-at home tooth whitener, giving the results of a clinical study. Opalescence PF 10% was applied for 14 days and the colour change followed over a 14 ... -
Insights into the clinical effectiveness of whitening products. Dentist-supervised-at-home bleaching product (Opalescence PF). Whitening of darker teeth in contrast to the effects on relatively whiter teeth
Grobler, Sias Renier; Osman, Yusuf Ismail (2017)This study evaluated the success of the whitening of darker teeth by comparing the results of a tooth whitening programme in two groups, subjects with darker (A2 and darker) teeth and patients with whiter teeth. ... -
Insights into the clinical effectiveness of whitening products. Part 2 Dentist-supervised-at-home LED gel bleaching product
Osman, Y.; Grobler, Sias Renier (SADA, 2017)This section of the report is about the success of a dentist-supervised-at home LED gel tooth whitener, giving the results of a clinical study. The product (LED light gel with 44% carbamide peroxide) was applied by the ... -
Orthodontic molar brackets: the effect of three different base designs on shear bond strength
Hudson, Athol; Grobler, Sias Renier; Harris, Angela (Master Publishing Group, 2011)The purpose of the study was to assess the relative base designs of three different maxillary molar stainless steel brackets with reference to the shear bond strength of three different adhesive resins. The molar brackets ... -
The pH Levels of different methamphetamine drug samples on the street market in Cape Town
Grobler, Sias Renier; Chikte, Usuf; Westraat, Jaco (Hindawi Publishing Corporation, 2011)The purpose of this study was to determine the pH levels of 29 different samples of methamphetamine on the street market in Cape Town. The sample was dissolved in water and the pH of each sample determined. The pH levels ... -
The pH of various tooth whitening products on the South African market
Majeed, Abdul; Grobler, Sias Renier; Moola, Mohamad H. (South African Dental Association, 2011)OBJECTIVES: The purpose of this in vitro study was to investigate the pH of 21 commercially available tooth-whitening products. METHODS: Tooth-whitening products were divided into four categories: dentist supervised-home ... -
The relationships between two different drinking water fluoride levels, dental fluorosis and bone mineral density of children
Grobler, Sias Renier; Louw, Adrian; Chikte, Usuf; Rossouw, Roelof; van Wyk Kotze, Theuns (Bentham Science Publishers, 2009)This field study included the whole population of children aged 10–15 years (77 from a 0.19 mg/L F area; 89 from a 3.00 mg/L F area), with similar nutritional, dietary habits and similar ethnic and socioeconomic status. ... -
Spectrophotometric assessment of the effectiveness of Opalescence PF 10%: a 14-month clinical study
Grobler, Sias Renier; Hayward, Roche; Wiese, S; Moola, Mohamad H.; van Wyk Kotze, Theuns (Elsevier, 2010)Objectives: To evaluate the effectiveness of Opalescence PF 10% just after treatment, at 6-month follow-up and at a 14-month follow-up period. Methods: Opalescence PF 10% was applied nightly for 14 days. The color of ...