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Biomedical subjects

J Smith

Publications and source records attributed to J Smith.

At least 1,603 records · Page 89Linked to original sources
PubMedDate not supplied

Adult orthodontic treatment: a challenging case report.

The case of a 61-year-old woman with a primary diagnosis of spondyloepiphyseal dysplasia and severe maxillary and mandibular spacing as well as anterior and posterior crossbites is presented. Clinical findings led to a diagnosis of macroglossia which required partial glossectomy in addition to comprehensive orthodontic treatment to correct malocclusion.

Dental Care for Chronically Ill↗
PubMedDate not supplied

Intramedullary nailing of femoral fractures in adolescents.

Fifty femoral shaft fractures were treated with reamed, interlocking, intramedullary nails utilizing a greater trochanteric starting point from 1991 through 1998. The 17 girls and 31 boys ranged in age from 10 to 16 years (mean, 13.2 years) at the time of injury. Average follow-up after fracture was 16 months. All fractures united, and the average leg-length discrepancy was 1 mm (range, -10 mm to +11 mm). No patient had angular or rotational deformities. No patients developed osseous necrosis of the femoral head. Despite intramedullary nailing through the greater trochanteric apophysis, articulotrochanteric distance measurements increased only 4.5 mm at the time of last follow-up. No patient developed significant proximal femoral deformity with some follow-up as far as 60 months from the time of surgery. Intramedullary nailing through a trochanteric starting point is a safe, effective method for treating femur fractures in this adolescent age group.

Adolescent↗
PubMedDate not supplied

Simplified approach to idiopathic toe-walking.

Controversy exists as to the treatment of idiopathic toe-walking (ITW). Since 1993, the authors have managed children with ITW using an outpatient percutaneous lengthening of the Achilles tendon, followed by placement of below-knee walking casts for 4 weeks. The authors reviewed 15 children who were treated for ITW with percutaneous Achilles tendon lengthening between 1993 and 1999. Ten of the 15 patients could be contacted for a follow-up survey. None of the parents stated that their child's toe-walking had recurred. There were no painful scars. All of the children were able to keep up with other children and did not notice any calf weakness. Two children had occasional Achilles tendinitis, which was relieved with antiinflammatory medications. All parents were satisfied with their child's outcome. The authors believe that percutaneous tendo-Achilles lengthening in ITW greatly simplifies the management of ITW.

Achilles Tendon↗
PubMedDate not supplied

The happy wanderer.

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Aged↗
PubMedDate not supplied

The effect of incremental versus bulk fill techniques on the microleakage of composite resin using a glass-ionomer liner.

Incremental placement of composite resin has been suggested to reduce microleakage, particularly at the gingival margin of class 5 cervical restorations. It has become clinically advantageous to place a glass-ionomer liner over dentin to further minimize microleakage resulting from a bond between the dentin and glass ionomer, and glass ionomer and resin. The objective of this study was to compare the microleakage behavior of three hybrid composite/bonding agent systems using bulk and incremental filling techniques utilizing a glass-ionomer liner. This was accomplished in vitro using freshly extracted bovine incisors and a Ca45 radioisotope and autoradiography. Sixty bovine incisors were divided into six experimental groups of 10 specimens per group. Class 5 preparations were cut at the cementoenamel junction and restored with the appropriate combination of Herculite XR/Bondlite, P50/Scotchbond 2, or Pertac Hybrid/Pertac Bond. All teeth were lined with the glass ionomer Ketac Bond before the final restoration was placed. The samples were finished and stored for 24 hours in distilled water before thermocycling. The samples were tested for microleakage using a Ca45 radioisotope technique and autoradiography. Incisal (enamel) and gingival (dentin) margins were scored separately for microleakage but grouped for statistical analysis. Results were analyzed using the Kruskal-Wallis H test. Pertac Hybrid exhibited more leakage than Herculite XR or P50. The difference between microleakage of bulk and incremental filling techniques was only significant for P50.

Analysis of Variance↗
PubMedDate not supplied

Evaluation of the VIDAS Listeria (LIS) immunoassay for the detection of Listeria in foods using demi-Fraser and Fraser enrichment broths, as modification of AOAC Official Method 999.06 (AOAC Official Method 2004.06).

A multilaboratory study was conducted to compare the VIDAS LIS immunoassay with the standard cultural methods for the detection of Listeria in foods using an enrichment modification of AOAC Official Method 999.06. The modified enrichment protocol was implemented to harmonize the VIDAS LIS assay with the VIDAS LMO2 assay. Five food types--brie cheese, vanilla ice cream, frozen green beans, frozen raw tilapia fish, and cooked roast beef--at 3 inoculation levels, were analyzed by each method. A total of 15 laboratories representing government and industry participated. In this study, 1206 test portions were tested, of which 1170 were used in the statistical analysis. There were 433 positive by the VIDAS LIS assay and 396 positive by the standard culture methods. A Chi-square analysis of each of the 5 food types, at the 3 inoculation levels tested, was performed. The resulting average Chi square analysis, 0.42, indicated that, overall, there are no statistical differences between the VIDAS LIS assay and the standard methods at the 5% level of significance.

Animals↗
PubMedDate not supplied

Effects of basin baths, tub baths, and showers on cardiovascular responses in 51 health men and women.

Heart rate and blood pressure during rest and bathing are generally lower in healthy individuals than in hospitalized patients. However, medications can exaggerate or attenuate patients' responses. Heart rate and blood pressure are highest during showering and lowest during basin baths in both patients and healthy subjects, but the differences among the three types of bathing are not clinically dramatic. In addition, the vigor of the activity can be easily controlled; hospitalized patients naturally conserve effort and move more slowly and deliberately than healthy individuals. A tachycardic response to bathing seems to be common in both healthy subjects and hospitalized patients. Careful control of water temperature and heart rate monitoring during bathing appear to be indicated when hospitalized cardiac patients bathe. Comparison of responses to sitting and standing showering would be worthwhile. The findings of this study help delineate the typical cardiovascular responses of healthy adults to three methods of bathing. The findings also emphasize gender differences and the importance of studying both men and women. Only by determining normal responses in men and women can abnormal responses be recognized. More study on cardiovascular responses to bathing and other common activities in both healthy and sick persons is clearly needed to better describe, explain, predict, and control responses to activity and to build a scientific foundation for activity prescription and restriction.

Adult↗
PubMedDate not supplied

The use of the Nb rat in combination chemotherapeutic experiments for prostate cancer.

The Nb rat adenocarcinoma model has been used to evaluate combination chemotherapy. The Nb rat is a model system in which one can measure tumor regression, tumor metastasis and response to treatment. Combination treatment decreased metastasis and increased the incidence of regression in this triple chemo treatment program of 5-FU, Adriamycin and Cisplatinum.

Adenocarcinoma↗
PubMedDate not supplied

Cold comfort.

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Aged↗
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Lessons to learn.

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Greece↗