Your browser doesn't support javascript.
Mostrar: 20 | 50 | 100
Resultados 1 - 16 de 16
Filtrar
Mais filtros










Base de dados
Intervalo de ano de publicação
1.
Eur Arch Paediatr Dent ; 21(1): 85-93, 2020 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-31134470

RESUMO

PURPOSE: To compare the effects of a fluoride dentifrice alone, versus a topical CPP-ACP crème used as a dentifrice, versus the combination of both agents (fluoride dentifrice followed by CPP-ACP crème) on early caries lesions (ECL) in primary anterior teeth of children over a 6-month period. METHODS: In this single blinded randomised clinical trial, children (n = 114, aged 4-5 years) with high caries risk and who had at least one ECL (ICDAS 2) on their primary anterior teeth were allocated to three groups. Subjects used different agents twice daily: fluoride dentifrice (500 ppm F, n = 42), CPP-ACP crème (10% w/v, n = 35), and the fluoride dentifrice followed by CPP-ACP crème (n = 37). Changes in lesions were tracked using QLF, comparing the baseline situation to 3 and 6 months of treatment. RESULTS: QLF changes consistent with mineral gain (∆F/fluorescence, lesion area) occurred in all three groups (baseline versus 3 months or 6 months, p ≤ 0.05 for all three groups). Differences between treatment groups were not statistically significant (p > 0.05). CONCLUSION: The topical CPP-ACP crème used alone gave effects similar to the fluoride dentifrice; however, the combination of the two did not give additive benefits over either agent used in isolation.


Assuntos
Cárie Dentária , Dentifrícios , Cariostáticos , Caseínas , Criança , Pré-Escolar , Fluoretos , Humanos , Minerais , Fluorescência Quantitativa Induzida por Luz , Remineralização Dentária
2.
Photodiagnosis Photodyn Ther ; 26: 324-326, 2019 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-31042556

RESUMO

INTRODUCTION: The aim of this case report was to describe the process of diagnosis and treatment of a cracked tooth using quantitative light-induced fluorescence (QLF). CASE REPORT: A 43-year-old male presented at our dental clinic with a complaint of cold pain in #17 tooth. A routine oral examination with radiography was performed for evaluation of the oral condition and treatment planning. Additionally, QLF image capture was performed using Qraycam and Qraypen (AIOBIO, Seoul, Republic of Korea), to collect white-light and fluorescence images. The #17 tooth was observed to have a crack line, showing red fluorescence, from the distal to mesial aspect on the occlusal surface. Even though there was no visible root fracture in the radiographic image, bone loss was observed. Therefore, we performed periodontal treatment. One month later, a root canal treatment was performed because the patient still complained of pain in the #17 tooth. During this treatment, one fluorescent image and one white light image set was captured with the Qraypen. A crack line showing red fluorescence was observed, while the line was not visible to the naked eye. After treatment, the patient has had no complaint related to this tooth for 3 years until today. CONCLUSIONS: Clinically, use of QLF confirmed the presence of a crack before and during a root canal treatment. Therefore, it is postulated that the QLF technology could objectively facilitate the diagnosis and treatment of a cracked tooth.


Assuntos
Fluorescência Quantitativa Induzida por Luz , Fraturas dos Dentes/diagnóstico por imagem , Adulto , Humanos , Masculino , Fraturas dos Dentes/terapia
3.
Photodiagnosis Photodyn Ther ; 26: 59-64, 2019 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-30862469

RESUMO

BACKGROUND: This study aimed to investigate if the semi-rapid maxillary expansion (SRME) can cause white spot lesion (WSL) formation using quantitative light-induced fluorescence digital (QLF-D). METHODS: The SRME group comprised 15 patients (9 girls, 6 boys; 13.5 ± 1 years) who had transverse maxillary deficiency and underwent expansion with full-coverage expanders. The screw of the expanders in the SRME group was activated twice a day for the first week. After decementation at the end of the first week, the screw activation protocol was changed to 3 turns/ week. In the SRME group, the QLF-D images were captured before starting treatment and 3.18 ± 0.32 months later when the expansion treatment was completed. The control group consisted of 15 subjects (8 girls, 7 boys; mean age 14.2 ± 1.9 years) who never had orthodontic treatment. The images of the control group were obtained with 3 months interval. The images were analyzed in terms of demineralization using analysis software. RESULTS: The left central incisor was the only tooth that was affected by WSL formation in the SRME group after expansion. The left central incisor tooth's fluorescence levels were decreased and the lesion area increased significantly (p < 0.05). No significant mineralization changes occurred in the control group (p > 0.05). CONCLUSIONS: SRME resulted in WSL formation in the left central incisor, while other teeth were not affected by demineralization. Although providing adequate oral hygiene is easier during SRME due to the removable appliance, the orthodontist should still be aware that it may cause demineralization.


Assuntos
Cárie Dentária/diagnóstico , Cárie Dentária/etiologia , Incisivo , Técnica de Expansão Palatina , Fluorescência Quantitativa Induzida por Luz , Adolescente , Diagnóstico por Computador , Feminino , Humanos , Masculino , Estudos Prospectivos
4.
J Appl Biomater Funct Mater ; 17(1): 2280800019827798, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-30808229

RESUMO

Nowadays, dental caries is one of the most common oral health problems, affecting most individuals. It has been found that, by remineralizing enamel at an early stage in the formation of enamel caries, teeth can be effectively protected from dental caries. In this work, a peptide with eight repetitive sequences of aspartate-serine-serine (8DSS) is applied as the bio-mineralizer in an in-vivo rat enamel caries model. Nondestructive quantitative light-induced fluorescence-digital (QLF-D) imaging and micro-computed tomography (micro-CT) are used to evaluate the remineralization of enamel carious lesions by measuring the total fluorescence radiance loss of the molar area (Δ QTotal), acquired using QLF-D imaging, and the mineral density and residual molar enamel volume, acquired using micro-CT. Correlations are explored between Δ QTotal and mineral density (strong correlation, r = 0.8000, p < 0.001) and Δ QTotal and residual molar enamel volume (moderate correlation, r = 0.6375, p < 0.001). Our results demonstrate that 8DSS is a promising in-vivo remineralization agent that exhibits comparable effects to NaF ( p < 0.05), which has been verified using the classical Keyes method. Moreover, the nondestructive QLF-D and micro-CT methods can be combined to quantify the remineralization of enamel carious lesions three-dimensionally in vivo, making them broadly applicable in quantifying hard tissues.


Assuntos
Dente Molar/efeitos dos fármacos , Peptídeos/farmacocinética , Remineralização Dentária/métodos , Sequência de Aminoácidos , Animais , Cárie Dentária/tratamento farmacológico , Cárie Dentária/patologia , Modelos Animais de Doenças , Dente Molar/diagnóstico por imagem , Dente Molar/patologia , Peptídeos/química , Peptídeos/farmacologia , Peptídeos/uso terapêutico , Fluorescência Quantitativa Induzida por Luz , Ratos , Índice de Gravidade de Doença , Microtomografia por Raio-X
5.
Photodiagnosis Photodyn Ther ; 26: 43-44, 2019 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-30797117

RESUMO

INTRODUCTION: A diagnosis based on traditional methods can differ under the same tooth condition. Additional diagnostic tools are required to overcome this limitation. QLF technology is a viable method for detecting residual caries and is increasingly being used to detect dentin-level residual caries. In this study we used the Qraypen (AIOBIO, Seoul, Korea) to investigate the usefulness of the QLF technology for diagnosing controversial cases. CASE 1: A 31-year-old man presented with pain in the left mandibular first molar. The old restoration and severe dental caries were removed as much as possible using traditional visual and tactile senses. The area of treatment was photographed using the Qraypen. We concluded that endodontic treatment was preferable based on the Qraypen findings combined with diagnostic information. CASE 2: A 67-year-old man presented with discomfort in the first molar on the right mandible. Most of the existing restoration and carious debris were removed. Black discoloration was observed around and within the crack line, but with no red fluorescence. Based on the results of these examinations we decided that a minimally invasive dentistry approach was appropriate. CONCLUSION: Using QLF technology is more objective and accurate than other methods of determining the removal end point and detecting healthy marginal dentin for successful restoration.


Assuntos
Testes de Atividade de Cárie Dentária/métodos , Cárie Dentária/diagnóstico , Fluorescência Quantitativa Induzida por Luz/métodos , Adulto , Idoso , Tomada de Decisões , Humanos , Masculino , Fotografação
6.
Photodiagnosis Photodyn Ther ; 25: 319-324, 2019 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-30648640

RESUMO

BACKGROUND: Various techniques have been suggested to quantitatively assess tooth wear; most have limited clinical application. The first aim of this in vitro study was to estimate the residual enamel thickness of teeth with various degrees of occlusal wear using quantitative light-induced fluorescence (QLF). The second aim was to identify relationships between the fluorescence parameters of QLF and the conventional tooth wear index (TWI) system. METHODS: Sixty-nine extracted permanent premolars and molars with initial stages of tooth wear (TWI score 1a-2: enamel wear to dentin exposure) were used. Two blinded and trained examiners participated in evaluation procedures. Occlusal QLF-digital (QLF-D) images were acquired for selecting area of interest (AOI) and calculating fluorescence for occlusal tooth wear (ΔFwear) of the AOI by the first examiner. Each specimen was cross-sectioned in the buccal-lingual direction. Enamel thickness from images obtained by stereomicroscopy and TWI of each sample was determined by the second examiner. Spearman correlation was used to determine the relationship of ΔFwear with enamel thickness and TWI. ΔFwear values were compared between histological scores with the Mann-Whitney U test. RESULTS: Seventy-six AOIs were analyzed. As enamel thickness decreased, ΔFwear values significantly increased and strongly correlated with enamel thickness (Spearman rho = -0.825, P < 0.001). There were significant differences in ΔFwear values among TWI scores (P < 0.001); ΔFwear strongly correlated with TWI (Spearman rho = 0.753, P < 0.001). CONCLUSIONS: ΔFwear values, which denote fluorescence difference by using QLF, showed a strong correlation with residual enamel thickness and tooth wear severity.


Assuntos
Esmalte Dentário/patologia , Fluorescência Quantitativa Induzida por Luz/métodos , Desgaste dos Dentes/patologia , Adulto , Dente Pré-Molar , Esmalte Dentário/diagnóstico por imagem , Humanos , Pessoa de Meia-Idade , Dente Molar , Fluorescência Quantitativa Induzida por Luz/normas , Sensibilidade e Especificidade , Índice de Gravidade de Doença , Atrito Dentário/diagnóstico por imagem , Atrito Dentário/patologia , Desgaste dos Dentes/diagnóstico por imagem , Adulto Jovem
7.
Photodiagnosis Photodyn Ther ; 25: 265-270, 2019 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-30611863

RESUMO

BACKGROUND: The difference in autofluorescence between enamel and dentine layer has prompted recommendations to use the quantitative light-induced fluorescence (QLF) method for quantifying tooth wear (TW). This study investigated the potential of QLF for distinguishing the severity of occlusal TW based on differences in the autofluorescence intensity. METHODS: In total, 106 extracted permanent molars and premolars having suspected wear without pulp exposure were used. The severity of wear was determined by visually examining all teeth using the tooth wear index (TWI) of Smith and Knight. QLF images were captured and converted into 8-bit grayscale images. The difference in the fluorescence intensity (ΔG) was calculated by comparing mean grayscale levels between sound and worn areas. Finally, histological examination was conducted by stereomicroscope to confirm the presence of dentine exposure. RESULTS: 100 teeth were included in the final analysis without six teeth having enamel cracks around worn area. The ΔG values increased with the severity of TW as quantified using conventional TWI codes, and differed significantly between the sound and enamel- and dentine-wear teeth (P < 0.001). The histology indicated that enamel remained on 57 teeth, while 43 teeth had dentine-exposed wear and showed significant differences in ΔG compared with enamel-remained teeth. CONCLUSIONS: The fluorescence intensity differed significantly depending on the presence of dentine exposure. ΔG could be used to distinguish between sound and enamel- and dentine-wear teeth with a significant correlation. These findings indicate that QLF could be useful for determining the severity of TW of occlusal surfaces noninvasively.


Assuntos
Esmalte Dentário/patologia , Dentina/patologia , Fluorescência Quantitativa Induzida por Luz/métodos , Desgaste dos Dentes/diagnóstico , Dente Pré-Molar , Humanos , Dente Molar/patologia
8.
Photodiagnosis Photodyn Ther ; 25: 142-147, 2019 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-30508664

RESUMO

BACKGROUND: This study compared two fluorescence parameters (fluorescence loss [ΔF] and red fluorescence gain [ΔR]) among three generations of quantitative light-induced fluorescence (QLF) systems with the aim of determining the validities of these parameters in the three devices for differentiating the severity of enamel caries. METHODS: Forty-one extracted human premolars and molars with suspected enamel caries were selected. Fluorescence images of all teeth were obtained using first-, second-, and third-generation QLF systems (Inspektor Pro, QLF-D, and Qraycam, respectively). Fluorescence parameters were then calculated using proprietary software. All of the specimens were also categorized histologically using polarized-light microscopy (PLM) based on histological levels related to the lesion depth into sound enamel (S), caries limited to the outer half of the enamel (E1), and caries involving the inner half of the enamel (E2). The Mann-Whitney test with Bonferroni correction was used to compare fluorescence parameters among the three generations of systems. The sensitivity, specificity, and area under the receiver operating characteristics curve (AUC) at two thresholds (S/E1 for detecting enamel caries lesions and E1/E2 for differentiating the caries severity) were calculated for evaluating the validities of the fluorescence parameters obtained using all three generations of QLF devices. RESULTS: ΔF did not differ significantly between the devices at any histological level. In addition, ΔF showed large AUCs at the thresholds of S/E1 and E1/E2 (0.97-0.98 and 0.89-0.90, respectively). On the other hand, ΔR was significantly higher for the third-generation device than for the first- and second-generation devices for E2 lesions (P < 0.001). At the S/E1 threshold, ΔR values of the first- and third-generation devices showed larger AUCs (0.96-0.97) compared with that of the second-generation device (0.91), whereas at the E1/E2 threshold the AUC was the largest for the third-generation device (0.87). CONCLUSIONS: The ΔF fluorescence parameter did not differ between the three generations of QLF devices, and showed high validity values. In terms of ΔR, the devices of all generations also showed good diagnostic performance for quantifying and detecting enamel caries lesions, but the third-generation QLF system produced superior results.


Assuntos
Cárie Dentária/diagnóstico , Cárie Dentária/patologia , Esmalte Dentário/patologia , Fluorescência Quantitativa Induzida por Luz/instrumentação , Dente Pré-Molar/patologia , Humanos , Dente Molar/patologia , Fluorescência Quantitativa Induzida por Luz/normas
9.
Photodiagnosis Photodyn Ther ; 25: 208-213, 2019 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-30529388

RESUMO

OBJECTIVES: This study aimed to determine the efficacy of a combination of photocatalysts-hydrogen peroxide at a low concentration (3.5%) and titanium dioxide (TiO2)-activated at a wavelength of 405 nm using quantitative light-induced fluorescence (QLF) technology, and to quantify their tooth-bleaching efficacy using fluorescence images obtained from QLF technology. MATERIALS AND METHODS: Forty bovine incisors were extrinsically stained according to Stookey's method, and were randomly divided into four groups (n = 10 per group). Two bleaching solutions were prepared by mixing 3.5% H2O2 with 0.05% of anatase and rutile TiO2 powders. These solutions were applied to the stained teeth using a microbrush and then irradiated for 15 min at either 306 or 405 nm to activate the bleaching agent. The color difference (ΔE*) was assessed before and after every 5 min of treatment. The ΔE* and the changes in the fluorescence loss (ΔΔF) were obtained from white-light and fluorescence images, respectively. RESULTS: All of the low-H2O2/TiO2 treatments caused significant tooth-bleaching efficacy after irradiation at 306 and 405 nm (p < 0.05). The results did not differ significantly between the two wavelengths (p > 0.05), but the bleaching efficacy was greater with anatase TiO2 at 306 nm and rutile TiO2 at 405 nm. Analysis of the fluorescence images revealed that the ΔF values increased significantly in all groups with the treatment time (p < 0.05). There was a statistically significant correlation between ΔE* and the change in ΔΔF (r = 0.822, p < 0.001). CONCLUSIONS: Combining low-H2O2/TiO2 with QLF technology at 405 nm has an efficacy of tooth-bleaching as a less harmful and biofriendly method, while the fluorescence images obtained by QLF technology could be used to assess tooth-bleaching.


Assuntos
Peróxido de Hidrogênio/farmacologia , Fluorescência Quantitativa Induzida por Luz/métodos , Titânio/farmacologia , Clareamento Dental/métodos , Animais , Bovinos , Relação Dose-Resposta a Droga , Distribuição Aleatória
10.
BMC Oral Health ; 18(1): 209, 2018 12 11.
Artigo em Inglês | MEDLINE | ID: mdl-30538001

RESUMO

BACKGROUND: A quantitative light-induced fluorescence digital (QLF-D) camera is able to assess demineralizations adjacent to orthodontic brackets. Rotations of teeth during and the presence of the orthodontic appliances may influence the longitudinal follow-up of such lesions over time. METHODS: Brackets were bonded on extracted teeth: 54 incisors and 31 canines. Demineralizations were formed in vitro directly cervical of the bracket. Images were captured using a QLF-D camera mounted on an optical bench, equipped with a goniometer on a turntable. The teeth were placed in the goniometer simulating buccolingual rotation (0°, 10°, 20°), the turn-table was used for mesiodistal rotations (0°, 10°, 20°). Standardized QLF-D images were made before (with and without a wire) and after debonding at combinations of aforementioned angles of rotation. The image after debonding at 0° buccolingual and 0° mesiodistal rotation served as a control. RESULTS: The presence of a bracket resulted in a significantly higher fluorescence loss, yet a smaller lesion area (p < 0.05) in comparison to the control. A significant higher fluorescence loss was seen for rotations towards lingual relative to the 0° buccolingual and 0° mesiodistal rotation, while the effect was less explicit towards buccal. CONCLUSIONS: Fluorescence loss and lesion size are influenced by the angle of rotation under which the demineralization is photographed. The full extent of demineralizations is only apparent after debonding when photographed at rotations of 0° mesiodistal and up to 20° buccal. Precaution must be taken into account assessing demineralizations of patients undergoing treatment with fixed appliances when using a QLF-D camera.


Assuntos
Braquetes Ortodônticos/efeitos adversos , Descoloração de Dente/etiologia , Humanos , Técnicas In Vitro , Fotografia Dentária , Fluorescência Quantitativa Induzida por Luz/métodos , Reprodutibilidade dos Testes , Dente/patologia , Descoloração de Dente/diagnóstico , Descoloração de Dente/patologia
11.
BMC Oral Health ; 18(1): 187, 2018 11 20.
Artigo em Inglês | MEDLINE | ID: mdl-30458753

RESUMO

BACKGROUND: The aim of this study was to analyze the correlation between the dental plaque indices measured using quantitative light-induced fluorescence-digital (QLF-D) and conventional clinical indices that assess gingival status. METHODS: From among the patients who visited Ewha Womans University Mokdong Hospital, 33 adults in their 20s who had relatively even teeth were selected for full-mouth QLF-D imaging. The images were used to analyze the QLF-D score and the QLF-D ΔR score. As clinical indices, the gingival index (GI), bleeding on probing (BOP), probing pocket depth (PPD), and patient hygiene performance (PHP) index were measured. The correlations between the QLF-D score and QLF-D ΔR score and each clinical index were analyzed. Analyses were performed comparing the indices of maxillary and mandibular teeth, the teeth on right and left sides of the mouth, anterior and posterior teeth, and buccal and lingual surfaces of each tooth. Pearson's correlation analysis was conducted (p < 0.05). RESULTS: The mean full-mouth QLF-D score was highly correlated with the GI, BOP, PPD, PHP index (p < 0.01). The mean full-mouth QLF-D score showed the highest correlation with GI (r = 0.749) and the lowest correlation with PPD (r = 0.683). The correlations between the QLF-D score were higher in the mandible than in the maxilla and in the anterior teeth than in the posterior teeth, while no significant differences were seen between the buccal and lingual surfaces of tooth. CONCLUSIONS: This study concluded that the correlations between the plaque indices measured for each tooth surface area using QLF-D and the clinical indices assessed were significantly high, and it allowed objective determination of the gingival status. Therefore, the plaque index measured using QLF-D may be used as an alternative to supplement the shortcomings of conventional clinical indices for educating patients about plaque control and continued patient oral care.


Assuntos
Índice de Placa Dentária , Placa Dentária/diagnóstico , Fluorescência Quantitativa Induzida por Luz , Adulto , Estudos Transversais , Placa Dentária/classificação , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Índice Periodontal , Fotografação , Reprodutibilidade dos Testes , Autorrelato , Inquéritos e Questionários , Adulto Jovem
12.
J Vet Dent ; 35(3): 187-194, 2018 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-30016898

RESUMO

Periodontal disease is a common disease of dogs and is initiated by the buildup of plaque on the tooth surface. As plaque matures, it becomes mineralized to form calculus, which although not directly involved in the etiology of periodontal disease, provides an irregular surface to which plaque can adhere. Evaluation of the quantity of plaque and calculus on dogs' teeth is therefore essential to enable the efficacy of products, designed to prevent or retard plaque and calculus accumulation, to be evaluated. The objective of this study was to determine whether quantitative light-induced fluorescence (QLFTM) is a suitable tool to quantify the amount of calculus on the buccal surface of dogs' teeth following the removal of disclosed plaque by tooth brushing. The amount of calculus on the teeth of 26 miniature schnauzers was measured, using QLF and a calculus index method (Warrick-Gorrel), during a 28-day phase crossover study comparing feeding a daily dental chew versus providing no daily chew. Quantification of calculus using the Warrick-Gorrel method showed a 43.8% reduction in calculus buildup, with 95% confidence interval of 27.3 to 60.3 ( P < .001). With QLF, the percentage reduction in calculus accumulation was 65.8% (58.1-73.4, P < .001). A retrospective sample size analysis showed that fewer dogs were required for QLF analysis compared to the Warrick-Gorrel method. This study demonstrated that QLF is a sensitive and precise method for quantification of calculus on dogs' teeth. It removes the subjective element of human examiners and has greater accuracy and reduced variability through the continuous nature of the data.


Assuntos
Cálculos Dentários/veterinária , Doenças do Cão/diagnóstico por imagem , Fluorescência Quantitativa Induzida por Luz/veterinária , Dente/diagnóstico por imagem , Animais , Estudos Cross-Over , Cálculos Dentários/diagnóstico por imagem , Cães , Fluorescência Quantitativa Induzida por Luz/métodos , Distribuição Aleatória , Estudos Retrospectivos
13.
Dentomaxillofac Radiol ; 47(8): 20180099, 2018 12.
Artigo em Inglês | MEDLINE | ID: mdl-29851354

RESUMO

OBJECTIVES: Previous work has shown qualitatively that detection of demineralized tooth areas (white spot lesions, WSLs) is more reliable in digital photographs (DP) as in quantitative light-induced fluorescence (QLF) images. Based on non-rigid, multimodal image registration, we now quantitatively compare manual and automatic markings in both modalities. METHODS: After braces removal, pairs of DP and QLF were acquired from 124 teeth of 31 patients. Three experienced raters marked the WSL on both DP and QLF images, each of which was presented twice in randomized order. For each tooth and each modality, a ground truth (GT) was established using the simultaneous truth and performance level estimation algorithm on the total of six manual markings per image. DP and QLF image pairs were spatially registered, by aligning the outline of the tooth area in DPs to that of the corresponding tooth area in QLF. Between all pairs of markings for all teeth, position and size were compared quantitatively by the Dice coefficient and the novel coefficient of inclusion. RESULTS: Our hypotheses: (i) the clinical inspection supported by DP is more sensitive to WSL as that by QLF, disregarding whether the automatic analysis or the experts' manual assessment of QLF is applied, and (ii) detected lesions in QLF are included in those of DP, were confirmed and not confirmed, respectively. CONCLUSION: DP and QLF are valuable methods to detect WSL in demineralized teeth. Combining both modalities can provide additional information on early lesion assessment.


Assuntos
Fluorescência Quantitativa Induzida por Luz , Desmineralização do Dente , Adolescente , Adulto , Criança , Cárie Dentária , Feminino , Humanos , Luz , Masculino , Fotografia Dentária , Distribuição Aleatória , Dente , Desmineralização do Dente/diagnóstico por imagem , Adulto Jovem
14.
Photodiagnosis Photodyn Ther ; 23: 45-49, 2018 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-29763738

RESUMO

PURPOSE: The aim of this in situ study was to measure baseline fluorescence loss values (ΔF(0)) using the quantitative light-induced fluorescence (QLF) technology to screen enamel lesions for effective remineralization following fluoride application. METHODS: In this single-blinded in situ study, 20 adult volunteers wore intraoral appliances containing 4 specimens of human enamel. The surfaces of the specimens were divided into 3 regions: sound, demineralized, and treated regions. After generating 80 artificial enamel lesions with varying ΔF values, all specimens were covered with 1.23% acidulated phosphate fluoride gel for 1 min. Three repeated QLF-digital measures of ΔF values were then obtained for the lesions, immediately after demineralization and at 1 and 4 weeks after fluoride application. RESULTS AND CONCLUSION: Fluoride application was found to increase the ΔF values of lesions significantly over time (p < 0.001). The groups with lower ΔF(0) values showed significantly larger changes in ΔF values over time (p < 0.001). Receiver operating characteristics analysis showed that baseline lesion values of ΔF(0) = -17.50 and -25.50 would allow for lesion ΔF to recover to -10 at 1 and 4 weeks after fluoride application, respectively (p < 0.001). The findings of this study indicate that clinicians can establish prognostic criteria for early carious lesions using the QLF technology, and hence predict the efficacy of fluoride treatment and devise effective lesion-specific treatment plans.


Assuntos
Cárie Dentária/diagnóstico , Cárie Dentária/tratamento farmacológico , Fluoretos Tópicos/farmacologia , Fluorescência Quantitativa Induzida por Luz/métodos , Adulto , Cárie Dentária/diagnóstico por imagem , Feminino , Humanos , Masculino , Índice de Gravidade de Doença , Método Simples-Cego
15.
Photodiagnosis Photodyn Ther ; 23: 68-70, 2018 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-29807148

RESUMO

The precise diagnosis of dental caries and determination of their severity are very important when planning for treatment. Low diagnostic power of traditional methods such as radiographic and visual-tactile examinations could increase in the ambiguity of clinical decision about some borderline lesions. The aim of this study was to identify the extent of dentin lesions by using Qraypen (AIOBIO, Seoul, Korea), a device that utilizes QLF technology, at the dentin level through representative 2 cases in this study. In the first case of chronic and deep dentin caries, the fluorescence loss and strong red fluorescence were still detected from the lesions when observed by Qraypen after removing the suspicious lesions using conventional methods. It was possible to gradually remove red fluorescent area until it reached an almost invisible state. In addition, from the second case of acute and secondary caries, it was difficult to detect the crack using conventional diagnostic methods. Based on the result of the Qraypen examination, we could verify the presence of the crack and its severity which had progressed into the pulp as a distinct red fluorescence. In conclusion, the QLF technology could be applied not only to detect dentin caries but also to provide evidences for determining extent of caries removal non-invasively and objectively.


Assuntos
Cárie Dentária/diagnóstico , Dentina , Fluorescência Quantitativa Induzida por Luz/métodos , Adulto , Cárie Dentária/diagnóstico por imagem , Humanos , Masculino , Pessoa de Meia-Idade , Índice de Gravidade de Doença
16.
J Evid Based Dent Pract ; 17(2): 125-128, 2017 06.
Artigo em Inglês | MEDLINE | ID: mdl-28501060

RESUMO

ARTICLE TITLE AND BIBLIOGRAPHIC INFORMATION: Orange/Red Fluorescence of Active Caries by Retrospective Quantitative Light-Induced Fluorescence Image Analysis. Gomez GF, Eckert GJ, Zandoná AF.Caries Res 2016; 50(3):295-302. SOURCE OF FUNDING: The study was partially supported by a grant from NIH/NIDCR (R01DE017890) TYPE OF STUDY/DESIGN: Retrospective case-control design using the data collected in a longitudinal study.


Assuntos
Citrus sinensis , Cárie Dentária , Humanos , Estudos Longitudinais , Fluorescência Quantitativa Induzida por Luz , Estudos Retrospectivos
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA