Assesment of artificial caries lesions through scanning electron microscopy and cross-sectional microhardness test.

Aims: To assess through scanning electron microscopy (SEM) and cross-sectional microhardness (CSMH) test whether the methodology exposed in this experiment can be used to produce artificial active white spot lesions (AAWSLs) on smooth unabraded human dental enamel.

Materials And Methods: Ten human permanent molars were used in this experiment. One section of each tooth was double coated with nail varnish except for a limited central area sized 2.

Overdenture for total rehabilitation in a child with early childhood caries.

The purpose of this case report was to present a clinical case of overdenture in a 3-year-old patient with early loss of his primary maxillary teeth, which were extracted due to the presence of early childhood caries. The treatment of choice was an overdenture using the Dalla Bona retention system, and the upper right canine was used as the retainer. The overdenture was placed to help maintain a normal daily diet that was satisfactory for the child and to re-establish masticatory function, speech, and facial aesthetics in the patient.

Assessment of pulp blood flow in primary and permanent teeth using pulse oximetry.

Pulse oximetry (PO) is a well-accepted non-invasive method for assessing vascular health, based on oxygen saturation (SaO(2) ) measurements. The objectives of this study were to design and build a custom-made PO dental sensor holder, to evaluate the effectiveness of PO in determining pulp blood flow in primary and permanent teeth, and to compare the SaO(2) levels obtained in teeth and on the little finger of patients. The PO sensor adapted to the custom-made sensor holder is termed as a device to position and hold the PO sensor.

Microtensile bond strength of 4 dentin adhesives to primary dentin.

Purpose: This study's purpose was to evaluate the aging effect on the bond strength of 4 adhesive systems on primary dentin 24 hours and 6 months after bonding.

Methods: The crowns of extracted, caries-free primary molars were grounded and flat surfaces were prepared and distributed into 4 groups (n=7-9). The adhesives Scotchbond Multi-purpose (SMP), Single Bond (SB), Clearfil SE Bond (CSB), and Adper Prompt L-Pop (APL) were applied with the composite resin Filtek Z-250.

Ex vivo study of manual and rotary instrumentation techniques in human primary teeth.

Objective: This study aimed to evaluate, ex vivo, time and dentin removal by manual and rotary instrumentation in human primary teeth.

Study Design: Eighty primary teeth were divided into 2 groups, embedded in resin, and sectioned for evaluation before and after instrumentation. For manual technique, teeth were prepared using K-type files and rotary preparation was performed with Hero 642.

Self-perception of side effects by adolescents in a chlorhexidine-fluoride-based preventive oral health program.

Objective: The objective of this study was to evaluate the incidence of adverse effects reported by adolescents following 14 days of use of a mouthrinse containing 0.05% NaF+0.12% chlorhexidine.

Effects of eugenol and non-eugenol endodontic fillers on short post retention, in primary anterior teeth: an in vitro study.

The aim of this study was to measure in vitro the tensile bond strength of short composite posts in anterior primary teeth filled with calcium hydroxide and eugenol-based endodontic filling materials. Means of tensile strength ranged from 2.66 to 3.

Bond strength to primary tooth dentin following disinfection with a chlorhexidine solution: an in vitro study.

Purpose: The aim of this study was to determine the effect on shear bond strength of chlorhexidine used as a cavity disinfectant on primary tooth dentin.

Methods: Thirty specimens were randomly divided into 3 groups (N = 10) and treated as follows: (1) in Group I, the dentin was acid etched with a 37% phosphoric acid for 15 seconds, washed and dried; (2) in Group II, a 2% commercial chlorhexidine solution (Cav Clean) was applied for 40 seconds, washed and dried following acid etching for 15 seconds; and (3) in Group III, dentin was treated with a 37% phosphoric acid gel containing 2% digluconate of chlorhexidine (Cond AC) for 15 seconds. In all specimens, the adhesive Single Bond (3M) was applied, and composite cylinders (Filtek Z 250) were built.

Tensile bond strength of intracanal posts in primary anterior teeth: an in vitro study.

The aim of this study was to measure in vitro; the tensile bond strength of three intracanal posts used in anterior primary teeth. A total of 45 single rooted primary anterior teeth were selected for the study and the crowns sectioned leaving 1mm above the cement-enamel junction. The roots were then assigned to three groups according the type of retention used.