Biomedical subjects

Raymond A Kuthy

Publications and source records attributed to Raymond A Kuthy.

10 recordsLinked to original sources

PubMed2006

The cost-effectiveness of large amalgam and crown restorations over a 10-year period.

OBJECTIVE: To assist clinical decision making for an individual patient or on a community level, this study was done to determine the differences in costs and effectiveness of large amalgams and crowns over 5 and 10 years when catastrophic subsequent treatment (root canal therapy or extraction) was the outcome. METHODS: Administrative data for patients seen at the University of Iowa, College of Dentistry for 1735 large amalgam and crown restorations in 1987 or 1988 were used. Annual costs and effectiveness values were calculated. Costs of initial treatment (large amalgam or crown), and future treatments were determined, averaged and discounted. The effectiveness measure was defined as the number of years a tooth remained in a state free of catastrophic subsequent treatment. Years free of catastrophic treatment were averaged, and discounted. The years free of catastrophic treatment accounted for individuals who dropped out or withdrew from the study. RESULTS: Teeth with crowns had higher effectiveness values at a much higher cost than teeth restored with large amalgams. The cost of an addition year free of catastrophic treatment for crowns was 1088.41 dollars at 5 years and 500.10 dollars at 10 years. Teeth in women had more favorable cost-effectiveness ratios than those in men, and teeth in the maxillary arch had more favorable cost-effectiveness ratios than teeth in the mandibular arch. CONCLUSIONS: Neither the large amalgam or crown restoration had both the lowest cost and the highest effectiveness. The higher incremental cost-effectiveness ratio for crowns should be considered when making treatment decisions between large amalgam and crown restorations.

Adult↗

PubMed2006

General dentists' referrals of 3- to 5-year-old children to pediatric dentists.

BACKGROUND: Little is known about general dentists' referral patterns. The authors explored the practice, dentist and patient characteristics associated with general dentists' likelihood of referring children aged 3 to 5 years to pediatric dentists. METHODS: The authors sent all Iowa general dentists (N = 1,089) a 25-item questionnaire regarding the referral of children in their practices. The authors merged the resulting information with an existing database (Iowa Dentist Tracking System) to create the dataset. A total of 65.4 percent of the dentists (712) participated. RESULTS: Logistic regression analysis demonstrated that an increase in the percentage of children in the practice decreased the likelihood of the dentist's referring the children (odds ratio [OR] = 0.93, 95 percent confidence interval [CI] = 0.90 to 0.96). Practices with more than 5 percent of patients with public insurance were more likely to refer children (OR = 1.96, 95 percent CI = 1.26 to 3.06), as were dentists with additional training beyond dental school (OR = 1.69, 95 percent CI = 1.06 to 2.69). CONCLUSION: These data indicate that both practice and dentist characteristics are associated with the likelihood of making referals; however, there needs to be further study on general dentists' referral decisions. PRACTICE IMPLICATIONS: As the characteristics of the dental work force evolve, there is a need to study referral patterns and the influence they have on work force policy, patient accessibility and educational curriculum.

Adult↗

PubMed2006

An assessment of cross-cultural education in U.S. dental schools.

The purpose of this study was to assess the status of cross-cultural education in U.S. dental schools and to identify characteristics associated with having a formal cross-cultural curriculum. An eighteen-item survey, which included questions about curricular format, teaching and evaluation methods, time, and course content, was sent to all U.S. dental schools. Comparisons were made using whether or not institutions had formal cross-cultural curricula. Forty-five of fifty-six schools responded. Twenty-nine schools reported having formal cross-cultural curricula in a separate course and/or integrated with other courses with specific goals and objectives. Schools that have formal cross-cultural curricula had higher scores on depth of curricula and spent more time than schools that reported having informal curricula (p=0.03). Competing curricular time and lack of faculty expertise were the most frequently cited impeding factors for inclusion of cross-cultural issues (87.8 percent and 68.3 percent, respectively), while diverse patient population and leadership commitment were the most frequently cited facilitating factors (92.5 percent and 67.5 percent, respectively). There is wide variation among dental schools regarding how they teach these issues and how students are evaluated. Dental schools lack guidance about how to best incorporate this curricular content.

Analysis of Variance↗

PubMed2005

Teeth with large amalgam restorations and crowns: factors affecting the receipt of subsequent treatment after 10 years.

BACKGROUND: The authors evaluated the factors associated with the receipt of subsequent treatment by teeth restored with a large amalgam restoration or a large amalgam restoration and crown restoration after 10 years. METHODS: The authors used retrospective data from the University of Iowa College of Dentistry (Iowa City, Iowa) administrative database and patient records to evaluate patient and tooth factors for their association with the two primary outcomes: receipt of any subsequent treatment and receipt of catastrophic treatment (extraction, endodontic therapy). RESULTS: The authors followed 518 teeth over a 10-year period (49 percent with large amalgam restorations and 51 percent with crowns). Sixty-four percent of the large amalgam restorations and 32 percent of the crowns received subsequent treatment during the 10 years. In addition to restoration type, the patient's sex, history of grinding teeth and having a broken tooth were related to the tooth's receiving subsequent treatment. Twenty-two percent of large amalgam restorations and 12 percent of crowns received catastrophic treatment with the odds of teeth with large amalgam restorations receiving a catastrophic treatment being 2.1 times the odds of teeth with crowns receiving catastrophic treatment. CONCLUSIONS: Teeth with crowns were less likely to receive any treatment or catastrophic treatment over 10 years than were teeth with large amalgam restorations. Patient and tooth factors also were related to a tooth experiencing subsequent treatment. CLINICAL IMPLICATIONS: Teeth with crowns received less subsequent treatment than teeth with large amalgam restorations. This could be related to both the difference in longevity between the two restorations, as well as how appropriately treatment was planned for each procedure. Cost differences between the two restorations need to be factored into the decision-making process.

Adult↗

PubMed2005

Natural history of treatment outcomes of permanent first molars: a study of sealant effectiveness.

BACKGROUND: Few studies have used insurance claims data to retrospectively assess the natural history--a natural process or flow of events without any special interventions--and treatment outcomes of teeth with dental sealants. METHODS: The authors constructed treatment outcome trees (TOTs) from the Iowa Medicaid claims and eligibility data (1996-2000) of continuously enrolled 6-year-old children who routinely used Medicaid dental services. The authors used the TOTs to compare the restorative treatments of sealed permanent first molars with those of nonsealed permanent first molars. RESULTS: Forty percent of routine utilizers received a sealant during the four-year period. Overall, 25 percent of molars received at least one restoration. Sealed molars were less likely to receive further restorative treatment than were nonsealed molars (13 versus 29 percent). Sealed molars had fewer extensive restorative treatments (crowns, endodontic therapy and extractions) than did nonsealed molars. The median time to restorative treatment of the sealed molars also was greater than that of the nonsealed molars. All four first molars had comparatively similar patterns of subsequent care. CONCLUSIONS: Permanent first molars with sealants received less subsequent restorative treatment than did those without sealants. TOTs are useful tools for identifying necessary outcome information needed for program evaluations. CLINICAL IMPLICATIONS: Greater use of sealants could reduce the need for subsequent treatment and prolong the time until treatment may be necessary for permanent first molars.

Child↗

PubMed2005

Ethical dilemmas reported by fourth-year dental students.

Ethics education in dentistry is a requirement for accreditation. Despite universal adoption of ethics courses, there is ongoing discussion about the appropriate content of these courses and about methods to engage students. Faculty who teach ethics must select a limited set of topics from the broad fields of professional ethics, bioethics, and the humanities. The purpose of this article is to describe the ethical issues reported by fourth-year dental students during community-based extramural clinical experiences. Senior dental students (n=123) wrote essays describing an ethical issue they encountered during one of two extramural rotations. Ethical issues were categorized and coded by consensus between two faculty authors. Students most often reported perceived dilemmas related to patients' limited resources (25 percent), conflict between professionals (19 percent), clinic policy or procedures (15 percent), and decision making by patients' surrogates (13 percent). One student (<1 percent) reported encountering no ethical issues. Students' perceptions of ethical issues in clinical practice offer faculty a foundation for designing a dental ethics curriculum that is practical and immediately relevant to the experience of a dental student. Students' reports may also yield a method for systematic assessment of students' abilities to apply classroom ethics instruction to clinical practice.

Education, Dental↗

PubMed2005

Students' comfort level in treating vulnerable populations and future willingness to treat: results prior to extramural participation.

This study analyzed senior dental students' perceptions prior to extramural rotations for comfort and future willingness to treat patients with special needs and other vulnerable groups. The sample included 690 University of Iowa senior dental students who graduated from 1992 through 2004. These students completed a questionnaire concerning twelve vulnerable population groups. Logistic regression models were performed, using student comfort and future willingness to treat each group as the dependent variable. There was a wide percentage of range of comfort with these groups, yet there was no individual group that more than 60 percent of these students were willing to treat in their future practices. Generally, prior experience with the group had a positive impact on comfort level. When gender was included in the regression models, male students were more likely to express comfort. In all instances except one, experience had a positive influence on perceived future willingness to treat the associated group. However, younger graduates had a greater willingness to treat. When controlling for other variables within the future willingness to treat models, comfort was statistically significant only for HIV+/AIDS and non-English speaking groups. This study provides insight about comfort with and perceived future willingness to treat special needs and other vulnerable patient groups.

Acquired Immunodeficiency Syndrome↗

PubMed2004

Twelve-month sealant retention in a school-based program using a self-etching primer/adhesive.

OBJECTIVES: Very little independent research has been done on the new self-etching primer/adhesives in dentistry. A recent clinical study compared two sealant application techniques involving self-etching primer adhesives and the traditional phosphoric acid etch. The purpose of this study was to compare these two techniques in an Iowa school-based sealant program. METHODS: Twelve-month sealant retention data on 208 students from the Des Moines, Iowa, school-based sealant program were analyzed retrospectively. RESULTS: Sealant retention reported at the person level showed that 60 percent of the students who received sealants at the five schools had to be recalled at one year to have one or more surfaces resealed. A logistic regression model at the person level demonstrated that the phosphoric acid technique was six times as likely to have retention of all the sealed tooth surfaces as those sealed with Prompt-L-Pop. CONCLUSIONS: In this study, many students had to be recalled to the chair 12 months after sealant application due to incomplete retention. Though sealants were retained in larger numbers with phosphoric acid, overall sealant retention at the tooth level was lower than previously published for clinical studies and school-based programs. Examining retention data at the person level, however, allows program administrators to plan resources more effectively and reevaluate sealant protocol to ensure as few children return for sealant reapplication.

Acid Etching, Dental↗

PubMedDate not supplied

Natural history of treatment outcomes for teeth with large amalgam and crown restorations.

The natural history of posterior teeth treated with a four or more surface amalgam restoration (LA) or a large amalgam restoration and a full-coverage crown (LAC) were compared over five- and 10-year periods. Subsequent treatment information was used to construct Treatment Outcome Trees (TOT), which described treatment that the teeth received after placement of LA and LAC restorations. Data were collected for all treatments provided to patients who received a four or five surface LA in 1987 or 1988 at the University of Iowa, College of Dentistry (UICD). The probability that these teeth would receive subsequent treatment and the type of subsequent treatment were placed into a TOT. In general, a higher percent of teeth with an LA received subsequent treatment and were more likely to receive major treatment (root canals, extractions, crowns) five years post placement than teeth with an LAC. Between five and 10 years, this trend continued, with the percentage of teeth with an LA receiving subsequent treatment increasing more (48% to 64%) than teeth with an LAC (12% to 22%). Regardless of the initial restoration type (LA/LAC), women were less likely to receive subsequent treatment and major treatment compared to men. The use of a TOT was found to be an effective observational approach for evaluating the natural history of teeth with alternative restorative treatment.

Adult↗

PubMedDate not supplied

General dentists' referral of children younger than age 3 to pediatric dentists.

PURPOSE: The purpose of this study was to assess which variables are associated with Iowa general dentists' referral of children younger than age 3 to pediatric dentists. METHODS: A survey was mailed to all Iowa general dentists (N=1,089). Respondents were asked how likely (never, sometimes, often, always) they were to refer children younger than age 3 to pediatric dentists in the past 12 months. Associations between referral patterns with practice, dentists,' and patients' characteristics were determined. RESULTS: The adjusted response rate was 65%. Nearly 50% of all dentists reported often or always referring children younger than age 3. Dentists who referred were more likely to be males and to have been in practice longer. Dentists who perceived that they had not received adequate exposure to preschool children younger than age 3 in dental school were more likely to refer. Dentists with smaller percentages of children within their practices were more likely to refer. Dentists most often referred children who were uncooperative, had severe decay, or had special needs. CONCLUSIONS: About one half of Iowa's general dentists refer children younger than age 3 to a pediatric dentist. Initiatives need to be undertaken to address dentists' reluctance to care for young children.

Adolescent↗