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ABSTRACT: To determine the effects of argon laser irradiation (ArI) and topical acidulated phosphate fluoride (APF) treatment on artificial caries formation in root surfaces.
After soft tissue debridement and fluoride-free prophylaxis, the teeth were divided into quarters and acid-resistant varnish was applied, leaving windows of sound root surface exposed. Each tooth received four separate treatments: (1) Control-mesiobuccal quarter; (2) ArI only--mesiolingual quarter; (3) ArI followed by APF- distobuccal quarter; (4) APF followed by ArI-distolingual quarter. ArI was for 10 seconds at 2W (100J/cm2) and APF treatment was for 4 minutes. After artificial lesion formation, sections were prepared and evaluated with polarized light. Mean lesion depths were determined and compared (ANOVA & DMR for a paired design).
Mean lesion depths were: 347 +/- 41 microns--controls; 263 +/- 32 microns--ArI only; 158 +/- 21 microns--ArI followed by APF; and 149 +/- 17 microns -APF followed by ArI. Lesion depths were significantly different (P < 0.05) between the control group and each treatment group, and between ArI only group and either combined APF and ArI groups. No lesion depth difference (P > 0.05) was present between the combined APF and ArI groups. Argon laser irradiation significantly enhanced the resistance of root surfaces to demineralization. Combination of APF treatment with argon laser irradiation provided added protection against a constant artificial caries attack.
American journal of dentistry 02/1995; 8(1):10-4. · 0.76 Impact Factor
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ABSTRACT: The aim of this study was to evaluate the effect of acidulated phosphate fluoride (APF) application time (1 and 4 minutes) on caries-like lesion formation in enamel. Following a fluoride-free prophylaxis, the specimens (10 extracted human molars) were divided into tooth quarters and assigned to treatment groups: 1) Distobuccal and Distolingual Quarters--1 minute APF; 2) Mesiobuccal and Mesiolingual Quarters--4 minute APF. Acid-resistant varnish was applied to the tooth quarters, leaving sound enamel windows exposed on buccal and lingual surfaces. Following treatment, the APF gel (Oral-B Minute Gel) was removed by air-water spray rinsing, followed by a 24-hour water rinse. Sound enamel windows protected from APF treatment by acid-resistant varnish were created adjacent to APF-treated sound enamel windows and served as paired controls. Lesions were created in APF-treated and paired control sound enamel windows with an acidified gel. After lesion formation, sections were obtained and imbibed with water for polarized light study. Body of the lesion depths were measured and compared statistically. Mean body of the lesion depths were: 186 +/- 28 microns for control lesions, 117 +/- 12 microns for APF-1min; and 111 +/- 14 microns for APF-4min. Significant differences (p < 0.05) were found between paired control and APF groups. No difference (p > 0.05) was found between APF-1min and APF-4min groups. APF treatment prior to lesion formation resulted in a significant reduction in lesion depth, regardless of whether a 1 or 4 minute APF treatment period was used. The 1 minute APF treatment provided the same degree of caries protection as the longer treatment period.
The Journal of clinical pediatric dentistry 01/1995; 19(2):105-10. · 0.44 Impact Factor
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ABSTRACT: The aim of this study was to evaluate the effect of low fluence argon laser (AL) and acidulated phosphate fluoride (APF) treatment on caries initiation (CI) and progression (CP) in human enamel. Twenty caries-free molars were divided into tooth quarters. Tooth quarters from each specimen were assigned to one of four groups: 1) Control; 2) AL Only; 3) AL before APF; 4) APF before AL. AL was at 0.25 watts for 10 seconds (12.0 +/- 0.5 J/cm2). APF treatment was with a 1.23% gel for 4 minutes. Lesions were created in two treated, sound enamel windows per tooth quarter with an acidified gel. After CI and CP, sections were obtained and imbibed with water for polarized light study. Mean body of the lesion (BL) depths were determined and compared among groups (ANOVA & DMR). After CI, BL depths were: 189 +/- 29 micrometers for Control, 133 +/- 23 micrometers for AL only; 91 +/- 17 micrometers for AL before APF; and 83 +/- 14 micrometers for APF before AL. After CP, BL depths were: 321 +/- 43 micrometers for Control, 206 +/- 35 micrometers for AL only; 118 +/- 21 micrometers for AL before APF; and 114 +/- 19 micrometers for APF before AL. After CI and CP, argon laser irradiation alone resulted in significant reductions in lesion depth when compared with controls (p<0.05). APF treatment before or after argon laser exposure resulted in a significant reduction in lesion depth when compared with AL alone or control groups (p<0.05). Caries initiation and progression in vitro are affected to a significant extent when low fluence (energy) argon laser irradiation of sound enamel alone or in conjunction with APF treatment is done. This caries-protective effect occurs at an argon laser fluence (energy) that is capable of polymerizing visible light-cured resins.
The Journal of clinical pediatric dentistry 01/1995; 20(1):9-13. · 0.44 Impact Factor
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ABSTRACT: Recent research shows that laser irradiation can improve enamel's resistance to caries. This in vitro study examines the effects of argon laser irradiation on root surface caries. Treated surfaces seemed more resistant to an artificial caries medium than control surfaces.
Journal of the American Dental Association (1939) 05/1994; 125(4):401-7. · 1.77 Impact Factor
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ABSTRACT: Numerous investigators have reported patients' postcementation sensitivity with glass-ionomer luting agents. This information has been predominantly anecdotal and unsupported by data. This paper reports on the actual perceptions of patients who had restorations cemented with both glass-ionomer and zinc phosphate luting agents. Forty-five patients were randomly selected and received two cast restorations, one cemented with glass-ionomer cement and the other with zinc phosphate cement, also by random assignment. After 1 week, patients returned to complete a self-administered evaluation of perceived sensitivity. Neither luting agent resulted in greater sensitivity when used according to its manufacturer's instructions.
Quintessence international 04/1994; 25(3):209-14. · 0.76 Impact Factor
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ABSTRACT: This study evaluated and compared the effects of argon laser and visible light polymerization of a pit and fissure sealant material on caries-like lesion initiation and progression. Following the lesion initiation period, the primary surface lesion depth was significantly less (P < 0.05) for the argon laser-cured group (97 microns) when compared with that for the visible light-cured group (151 microns). Wall lesion occurrence was 5% for both treatment groups. Following lesion progression, the primary surface lesion depth was significantly less (P < 0.05) for the argon laser-cured group (129 microns) when compared with that for the visible light-cured group (232 microns). Wall lesion occurrence was 15% and 5% for visible light-cured and argon laser-cured groups, respectively (P < 0.05). Argon laser-curing of sealant material may enhance the caries resistance of the enamel forming the enamel-resin interface and result in a reduction in caries formation adjacent to sealants.
American journal of dentistry 08/1993; 6(4):176-80. · 0.76 Impact Factor
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ABSTRACT: To determine the protocol and use of prescriptions of fluoride supplementation by primary care pediatricians and pediatric dentists in the Houston (Tex) area.
Survey mailed to all primary care pediatricians and pediatric dentists listed in the Yellow Pages of the Greater Houston telephone directory.
153 pediatricians and 47 pediatric dentists.
Ninety-six percent of the participants prescribed fluoride supplements. Fifty-one percent of the pediatricians and 61% of the dentists considered that the fluoride content of the water was important. Seventy percent of the pediatricians and 30% of the dentists discontinued the use of supplements by age 7 to 10 years.
Pediatricians and pediatric dentists should consider the need for water analysis prior to supplementation and should continue the use of fluoride supplements until 16 years of age.
American journal of diseases of children (1960) 01/1993; 146(12):1488-91.
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Journal of the American Dental Association (1939) 03/1991; 122(2):93-5. · 1.77 Impact Factor
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Journal of the American Dental Association (1939) 02/1991; 122(1):108, 110, 112-3. · 1.77 Impact Factor
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ABSTRACT: This study compared four interim endodontic filling materials for microleakage. Forty extracted premolars were prepared for first appointment endodontic therapy. Each tooth was filled with one of four materials, thermocycled, placed in basic fuchsin dye, sectioned, and photographed. Ketac-Silver showed virtually no leakage; IRM exhibited leakage ranging from minimal to the depth of the dentin; Term had leakage ranging from slight to the depth of the pulp; gutta-percha exhibited leakage in the various samples from deep dentin penetration to pulp chamber penetration. Ketac-Silver demonstrated superior sealing qualities compared to the other three materials. The gutt-percha was remarkably inferior to the other materials.
American journal of dentistry 05/1990; 3(2):71-4. · 0.76 Impact Factor
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ABSTRACT: The release of fluoride from glass ionomer materials is one of the most important features of this newly implemented material, and the remineralization effects of this phenomenon have been documented (Hicks and Silverstone 1986). This paper examines the effects of glass ionomer/silver cermet restorations on the plaque levels of interproximal mutans streptococci. Fifteen patients with Class II lesions in primary molars were selected for study. Interproximal plaque samples were obtained from each of the lesion sites and from one caries-free site approximal to a primary molar. One lesion was restored with composite resin to serve as a treated control to the glass ionomer/silver cermet (Ketac Silver, ESPE/Premier Sales Corp., Norristown, Pennsylvania) test site. A sound (unaltered) interproximal site served as the untreated control site. Plaque samples were collected before and at one week, one month, and three months post-treatment. Samples were serially diluted to enable colony counts of mutans streptococci. One week post-treatment counts showed that the glass ionomer/silver cermet restorations significantly reduced (P less than 0.05) the approximal plaque levels of mutans streptococci. Conversely, the untreated and treated control sites did not exhibit reductions in approximal plaque levels of mutans streptococci. These results indicate that glass ionomer restorations may be inhibitory to the growth of mutans streptococci in dental plaque approximal to this restorative material in the primary dentition.
Pediatric dentistry 03/1990; 12(1):20-3. · 1.02 Impact Factor
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Quintessence international 02/1989; 20(1):43-7. · 0.76 Impact Factor
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ABSTRACT: Dental management of pediatric oncology patients is an important component of comprehensive supportive care. Oral complications associated with tumor directed treatment may be a direct result of the stomatotoxic effects of cancer therapy or the indirect effects of myelosuppression. These complications may be immediate or long-term. Appropriate dental supportive care has been shown to minimize the morbidity and potential mortality associated with these complications.
Pediatric Annals 12/1988; 17(11):715-25. · 0.48 Impact Factor
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Quintessence international 10/1988; 19(9):639-41. · 0.76 Impact Factor
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American journal of dentistry 09/1988; 1(4):135-7. · 0.76 Impact Factor
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ABSTRACT: The pediatric nurse practitioner advises families in proper oral hygiene, fluoride supplementation, prevention of damaging oral habits and tooth decay, and the need for children to see a pediatric dentist. This article presents the issues of oral health for children from infancy through adolescence. Common pathologic conditions, oral trauma, and the use of sealants in children are also described.
Journal of Pediatric Health Care 8(4):160-7. · 1.66 Impact Factor
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ABSTRACT: This study compared the sedative effectiveness of orally administered ketamine to a combination of oral meperidine/promethazine (Demerol/Phenergan) in two groups of children. One group received ketamine at a dose of 6 mg/kg and the other group received meperidine/promethazine combination at a dose of 2 mg/kg and 0.5 mg/kg, respectively. All children received nitrous oxide 30-50% titrated to effect. A four-point modification of the Houpt et al. rating scale for the overall behavior was used in the evaluations. The quality of sedation, as rated by subjective measurement of overall behavior (sleep, crying, body movement), was higher in the ketamine group (borderline significance; P = 0.07). Mean onset time was significantly shorter (P < 0.001) for ketamine (20.5 min) than meperidine/promethazine (42.4 min) and postoperative sleep time (recovery) was also shorter (borderline significance; P = 0.08) for ketamine (55.6 min) than meperidine/promethazine (106.8 min). Operative times were similar, but the placement of rubber dam and local anesthetic were slightly better tolerated in the ketamine group. Vomiting was significantly more prevalent (P = 0.05) among those who received oral ketamine. Vital signs were consistent for the two groups with no oxygen desaturation below 95%.
Pediatric dentistry 15(3):182-5. · 1.02 Impact Factor
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ASDC journal of dentistry for children. 60(3):201-6.
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ABSTRACT: The conservative technique provides a more esthetically pleasing result in patients where significant tooth structure remains after completion of a pulpotomy. This technique is particularly beneficial for situations where the access for the pulpotomy was made through only the occlusal surface, leaving all proximal surfaces intact.
ASDC journal of dentistry for children. 55(6):463-4.
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ABSTRACT: This study is designed to examine the clinical signs relating to profound anesthesia of the primary dentition using the inferior alveolar nerve block (IANB) injection. The IANB injection has been used for many years for both adults and children to anesthetize the mandibular teeth. Most dentists are quite familiar with the signs of profound intraoral anesthesia in the adult. Because of infrequent exposure, they might not be as aware of the signs of adequate anesthesia on the child patient. Additionally, the dentist may not be able to differentiate apprehensive behavior from behavior elicited with inadequate pulpal anesthesia. The study consisted of forty male and female children. The subjects who ranged in age from 3 years to 12 years, with a mean age of 7 years, were scheduled for routine restorative care of mandibular primary teeth. Each subject was injected with 1.8 ml of 2 percent xylocaine, 1:100,000 epinephrine using the mandibular-block technique. Anesthesia was evaluated using direct ice placement, lip reaction, tongue reaction and gingival reaction at intervals of 0, 1, 2, and 5 minutes. The results showed a correlation of lip and tongue anesthesia and pulpal anesthesia over time. A stronger correlation existed with gingival anesthesia and pulpal anesthesia over time. There was no statistical relationship between the subject response to ice and pulpal anesthesia.
ASDC journal of dentistry for children. 57(5):361-5.
