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Biomedical subjects

W F Hohlt

Publications and source records attributed to W F Hohlt.

6 recordsLinked to original sources
PubMed1999

Management of anterior spacing with orthodontics and prosthodontics.

Closing maxillary and mandibular diastemas is facilitated by a multidisciplinary approach involving orthodontics and prosthodontics. This case study demonstrates the management of a discrepancy in maxillary and mandibular anterior tooth widths. The problem is resolved by limited orthodontic treatment followed by porcelain laminate veneers. Anterior spacing is one of the major reasons adults seek esthetic treatment. Multidisciplinary treatment (periodontics, orthodontics and/or prosthodontics) is often indicated for an optimal result.

Adult↗
PubMed1997

Clinical orthodontics in predoctoral education. Six years of experience at Indiana University.

Since 1990, clinical achievement in orthodontics has been a graduation requirement at Indiana University. To be certified for graduation, all dental students must treat at least one limited orthodontic problem and observe the retention of at least one previously treated, limited orthodontics patient. Although clinical orthodontics for adults appears to be a very successful addition to the predoctoral curriculum, the specific accreditation requirements that mandated it have been rescinded. However, the positive response of the students, apparent acceptance by the orthodontic community, and the national acclaim afforded the program indicate that a hands-on clinical experience in orthodontics is a positive addition to the predoctoral curriculum.

Accreditation↗
PubMed1994

Sterilization efficacy of a forced-air, dry heat sterilizer.

PURPOSE: To evaluate forced-air, dry heat sterilizer and test its ability to kill spores of Bacillus subtilis during both available cycles using packaged and unpackaged instruments. MATERIALS AND METHODS: A standard set of six orthodontic instruments were processed unpackaged through replicate 6-minute cycles with spore-strips on the top and bottom of each instrument. The spore strips were analyzed by culturing in Trypticase-soy broth for 7 days at 37 degrees C. RESULTS: No sterilization failures from properly placed spore-strips were detected in any of the 18 replicate cycles. Measurements of temperatures at three chamber sites during these cycles yielded only two of 36 instances when any portion of the chamber was at a temperature below the set temperature; however, no sterilization failures occurred during either of the two cycles involved. Also, a set of four orthodontic pliers were packaged and processed through replicate 12-minute cycles with spore-strips placed inside and attached to the outside of each package. None of the total 144 spore-strips processed through six replicate cycles showed growth after culture analysis. The study demonstrated sterilization efficacy for both the wrapped and unwrapped instrument cycles using biological indicators typically used to monitor dental office sterilizers.

Bacillus subtilis↗
PubMed1990

Sterilization of orthodontic instruments and bands in cassettes.

The purpose of this study was to determine whether orthodontic instruments and bands contaminated with blood or saliva and bacterial spores can be heat sterilized while contained in OMS-ASAPsys instrument and band cassettes. Hinged and nonhinged instruments and bands were contaminated and dried, placed in the cassettes, ultrasonically cleaned, rinsed, and dried. The cassettes were wrapped and then processed through standard steam, chemical vapor, or dry-heat sterilizing cycles. Each instrument and band was then cultured for the presence of live spores. The results showed that the residual spores on the instruments and bands after ultrasonic cleaning and rinsing had indeed been killed in all cases. The three types of sterilization were equally effective. The results indicate that contaminated orthodontic instruments and bands can be sterilized within OMS-ASAPsys cassettes.

Blood↗
PubMedDate not supplied

Orthodontic crown lengthening.

As comprehensive dentistry becomes more complex, procedures must be developed to save teeth once considered unsuitable for crown restoration due to inaccessible finishing lines. Orthodontic crown lengthening is less invasive than a flap procedure and does not result in crestal bone reduction. The crown lengthening procedure is a simple and time-saving remedy for a difficult restorative problem.

Crown Lengthening↗