Abstract Purpose: This study evaluated and compared in vitro the microstructure mineral composition of permanent deciduous teeth's dental enamel. Methods: Sound third molars ( n = 12) second primary were selected randomly assigned to following groups, according analysis method performed 4): Scanning electron microscopy (SEM), X‐Ray diffraction (XRD) Energy dispersive X‐ray spectrometer (EDS). Qualitative quantitative comparisons enamel done. The microscopic findings analyzed statistically by...

This study evaluated the influence of a cola-type soft drink and soy-based orange juice on surface subsurface erosion primary enamel, as function exposure time. Seventy-five incisors were divided for microhardness test (n=45) or scanning electron microscopy (SEM) analysis (n=30). The specimens randomly assigned to 3 groups: 1 - artificial saliva (control); 2 drink; juice. Immersion cycles in beverages undertaken under agitation 5 min, times day, during 60 days. Surface was measured at 7, 15,...

This study evaluated, in vitro, the erosive potential of pediatric liquid medicines primary tooth enamel, depending on exposure time. Sixty deciduous incisors were randomly assigned to 4 groups (n=15), according immersion solutions: guaifenesin; ferrous sulfate; salbutamol sulfate and artificial saliva. The cycles undertaken under a 1-min agitation, which wasperformed three times daily, during 28 days. Surface microhardness was measured at 7,14, 21 titratable acidity buffering capacity media...

This study evaluated in vitro the shear bond strength (SBS) of a resin-based pit-and-fissure sealant [Fluroshield (F), Dentsply/Caulk] associated with either an etch-and-rinse [Adper Single Bond 2 (SB), 3M/ESPE] or self-etching adhesive system [Clearfil S3 (S3), Kuraray Co., Ltd.] to saliva-contaminated enamel, comparing two curing protocols: individual light and simultaneous both materials. Mesial distal enamel surfaces from 45 sound third molars were randomly assigned 6 groups (n=15),...

Epidermolysis bullosa (EB) is a heterogeneous group of rare genetic disorders characterized by marked fragility the skin and mucous membranes in which vesiculobullous lesions occur response to trauma, heat or no apparent cause. The recessive form EB presents greatest oral alterations including repeated blistering scar formation leading limited opening, ankyloglossia, tongue denudation, microstomia, vestibule obliteration predisposition carcinoma. Routine dental care may cause bullae on lips...

The purpose of the present study was to evaluate in vivo failure rate metallic brackets bonded with two orthodontic composites. Nineteen patients ages ranging from 10.5 38.7 years needing corrective treatment were selected for study. enamel surfaces second premolars treated Transbond Plus-Self Etching Primer (3M Unitek). Next, 380 on maxillary and mandibular teeth, as follows: 190 XT composite Unitek) (control) Plus Color Change (experimental) contralateral quadrants. light cured 40 s,...

The chemical compositions (organic and inorganic contents) mechanical behaviors of the dentin permanent deciduous teeth were analyzed compared using X-ray fluorescence spectrometry (µ-EDXRF) Fourier transform Raman spectroscopy (FT-Raman) a microhardness test (HD). Healthy fresh human primary molars (n = 10) selected, buccal surfaces facing upwards stabilized in an acrylic plate, flattened, polished, submitted to µ-EDXRF, FT-Raman, HD analysis. results analysis subjected ANOVAs Mann-Whitney...

This study evaluated in vitro the shear bond strength of a resin-based pit-and-fissure sealant (Fluroshield - F) associated with either an ethanol-based (Adper Single Bond 2 SB) or acetone-based (Prime & PB) adhesive system under conditions oil contamination. Mesial and distal enamel surfaces from 30 sound third molars were randomly assigned to groups (n=30): I no contamination; II Contamination (0.25 mL during 10 s) was performed after 37% phosphoric acid etching air/oil spray. The...

To evaluate the ablation capacity of different energies and pulse repetition rates an erbium-doped yttrium aluminium garnet (Er:YAG) laser on primary dentin by assessing mass loss to analyze surface morphology using scanning electron microscopy (SEM).Previous studies have demonstrated ability Er:YAG ablate substrate.Forty-eight sound molars were bisected in mesiodistal direction. The surfaces flattened, initial (mg) was obtained. A 4-mm2 area delimited. Specimens randomly assigned 12 groups...

This study evaluated the in vitro shear bond strength (SBS) of a resin-based pit-and-fissure sealant (Fluroshield [F], Dentsply/Caulk) associated with either an etch-and-rinse (Adper Single Bond 2 [SB], 3M/ESPE) or two-step self-etch adhesive system SE Plus [SE], on Er: YAG laser-irradiated enamel.Seventeen sound third molar crowns were embedded acrylic resin, and mesial-distal enamel surfaces flattened. The sites irradiated 2.94-μm wavelength laser (120 mJ, 4 Hz, noncontact mode/17 mm, 20...

Sotos Syndrome is a genetic condition characterized by accelerated bone development, abnormal craniofacial morphology and psychomotor developmental retardation. The behavioral problems usually associated with the syndrome include poor social skills, anxiety and/or irritability. Oral findings prognathism high-arched palate premature eruption of teeth. Delayed development increases risk for caries. A personalized preventive treatment plan close supervision patient's oral health care required....

The aim of this study was to assess in vitro the influence CO2 laser and type ceramic bracket on shear bond strength (SBS) enamel.A total 60 enamel test surfaces were obtained from bovine incisors randomly assigned two groups, according used: Allure (A); Transcend (T). Each group divided into 2 subgroups (n = 15): L, (10W, 3s); C, no laser, or control. Twenty-four hours after bonding protocol using Transbond XT, SBS tested at a crosshead speed 0.5 mm/min universal testing machine. After...

Myelomeningocele (MMC) is a congenital malformation of the neural tube that occurs in first weeks pregnancy. This refers to caudal non-closure and tissue exposure, which lead neurological problems, such as hydrocephalus, motor disability, genitourinary tract skeletal abnormalities mental retardation. Patients with MMC have an acknowledged predisposition latex allergy are usually at high caries risk activity due poor oral hygiene, fermentable carbon hydrate-rich diet prolonged use...