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Biomedical subjects

A Hugoson

Publications and source records attributed to A Hugoson.

At least 37 records · Page 2Linked to original sources
PubMed1995

A 25 year longitudinal study of patients treated with removable partial dentures.

A 25 year longitudinal study was carried out on a number of patients fitted with removable partial dentures (RPDs) in 1969. Before the prosthetic treatment all patients were given oral hygiene motivation and instructions in order to create a high level of co-operation. The RPDs, most of which were lower bilateral distal extension dentures, were carefully planned and designed. During the first 10 years the patients were examined in our clinic at yearly intervals at which time encouragement and reinstruction regarding oral hygiene were given and various treatment procedures were performed as required. After the initial 10 years the patients were advised, for practical reasons, to continue to have yearly controls on their own initiative. Of the initial 30 patients from 1969, 23 were still alive in 1994, all of whom were examined. In five of those 23 the original RPD situation had changed more or less due mainly to general illness contracted and/or change to other therapies. In the remaining 18 patients wearing in total 20 RPDs, 13 (65%) of the original RPDs were still functioning. Seven RPDs were new with principally the same design as the original ones. Among these 18 patients the number of lost teeth, the number of new DF surfaces and the increased number of endodontically treated teeth were few. No apparent changes took place regarding the periodontal condition during the follow-up period.(ABSTRACT TRUNCATED AT 250 WORDS)

Aged↗
PubMed1995

Some suspected periodontopathogens and serum antibody response in adult long-duration insulin-dependent diabetics.

The subgingival microflora and serum antibody response were examined in long-duration insulin-dependent diabetics and age- and sex-matched non-diabetics. The material consisted of 9 diabetics aged 40-49 years and 19 aged 50-59 years, 13 non-diabetics aged 40-49 years and 21 aged 50-59 years. The bacterial species studied (Actinobacillus actinomycetemcomitans, Campylobacter rectus, Capnocytophaga spp, Eikenella corrodens, Fusobacterium nucleatum, Porphyromonas gingivalis, Prevotella intermedia) were recovered in diabetics as well as in non-diabetics. Significantly more diabetics in both age groups harboured P. gingivalis compared to non-diabetics. Prevalence of P. gingivalis was associated with deepened periodontal pockets among non-diabetics but not among diabetics. In diabetics and non-diabetics, the serum antibody titres for most antigens were similar.

Adult↗
PubMed1995

Treatment of class II furcation involvements in humans with bioresorbable and nonresorbable guided tissue regeneration barriers. A randomized multi-center study.

In this multi-center study 38 patients with contralateral molar Class II furcation defects were treated with GTR therapy using a bioresorbable matrix barrier (test) and a nonresorbable expanded polytetrafluoroethylene (ePTFE) barrier (control). Following flap elevation, scaling, root planing, and removal of granulation tissue, each device was adjusted to cover the furcation defect. The flaps were repositioned and sutured to complete coverage of the barriers. A second surgical procedure was performed at control sites after 4 to 6 weeks to remove the nonresorbable barrier. Before treatment and 12 months postsurgery all patients were examined and probing depths, clinical attachment levels, and position of the gingival margin were recorded. The primary response variable was the change in clinical attachment level in a horizontal direction (CAL-H change). Both treatment procedures reduced the probing depths (P < or = 0.001). Statistically significant gain of clinical attachment level in both horizontal and vertical direction was found at the test sites. At control sites gain of attachment in horizontal direction was statistically significant. The gain of CAL-H was 2.2 mm at test sites compared to 1.4 mm at control sites (P < or = 0.05). At test sites, the gingival margin was maintained close to the pre-surgical level (0.3 mm), whereas at control sites gingival recession was evident (0.9 mm), the difference being statistically significant (P < or = 0.01). Postsurgical complications, such as swelling and pain were more frequent following the control treatment (P < or = 0.05).

Adult↗
PubMed1995

Oral health of individuals aged 3-80 years in Jönköping, Sweden in 1973, 1983, and 1993. I. Review of findings on dental care habits and knowledge of oral health.

The aim of the present study was to compare data on dental care habits and knowledge of oral health in three cross-sectional studies carried out in 1973, 1983, and 1993. The 1973 study constituted a random sample of 1000 individuals evenly distributed in the age groups 3, 5, 10, 15, 20, 30, 40, 50, 60, and 70 years. The same age groups with addition of a group of 80-year-olds were included in the 1983 and 1993 studies which comprised 1104 and 1078 individuals, respectively. A questionnaire (23-101 questions) about dental care habits and knowledge of oral health was used in connection with a clinical and radiographic examination. The same questions were used in all the three studies. An addition to the 1993 investigation was questions concerning ethnographic background. In 1993 approximately 95% of all individuals were visiting the dentist on a regular basis every or every second year. The 30-year-olds, however, did not visit a dentist as regularly in 1993 as in 1983. The 70- and 80-year-olds visited a dentist more regularly in 1993 than in 1983. An increased number of adults in all age groups, except for the 70-year-olds, received their dental care in the Public Dental Service in 1993 compared to 1983 and 1973. Most 40-year-olds and older, however, received their dental care by private practitioners. About 80% of all adults in 1993 were enrolled in a recall system on the dentist's initiative while in 1973 most appointments were based on the patient's own initiative. The number of individuals who felt discomfort at the prospect of an appointment with the dentist was more or less the same in 1973, 1983, and 1993. The knowledge of the etiology of dental diseases has not changed much between 1973 and 1993. The frequency of toothbrushing has increased since 1973 and in 1993 more than 95% of all individuals brushed their teeth daily. The use of dental floss and toothpicks as well as disclosing tablets decreased in 1993 compared to 1983. Almost all individuals in 1993 used fluoride toothpaste. The use of topical fluorides and fluoride tablets in children had decreased considerably in 1993 compared to 1983.

Adolescent↗
PubMed1995

Oral health of individuals aged 3-80 years in Jönköping, Sweden in 1973, 1983, and 1993. II. Review of clinical and radiographic findings.

The aim of this epidemiological study was to analyse various clinical and radiographic data on oral health and compare the results to those of two cross-sectional studies carried out in 1973 and 1983. In 1973, 1983, and 1993 a random sample of 1000, 1104, and 1078 individuals, respectively were studied. The individuals were evenly distributed in the age groups 3, 5, 10, 15, 20, 30, 40, 50, 60, and 70 years. In 1983 and 1993 80-year-olds were also included. All subjects were inhabitants of the community of Jönköping, Sweden. The clinical and radiographic examination assessed edentulousness, removable dentures, implants, number of teeth, caries, restorations and overhangs, oral hygiene, calculus, periodontal status, endodontic treatment, and periapical status. The number of edentulous individuals was reduced by half from 1973 to 1993 and is now 8% in the age groups 40-70 years. The mean number of teeth has increased and up to the age of 50 years the individuals had more or less complete dentitions. During the 20-year period there was generally decreasing number of carious lesions and restorations. In the 15- and 20-year-olds, however, there was an increasing number of decayed/filled tooth surfaces in 1993 compared to 1983. Furthermore, after the age of 50 there was an increase in number of restored tooth surfaces. As regards secondary caries there was an increase for the 10- and 15-year-olds between 1983 and 1993. For all other age groups there were only minor differences. Generally restorations exhibited a high quality and 85-90% had no proximal overhangs. In 1973 this figure was about 60%. Concerning the frequency of tooth surfaces exhibiting plaque and gingival inflammation there was a considerable decrease from 1973 to 1983, but during the period from 1983 to 1993 there seems to be no improvement. In some age groups there was even a significant increase in plaque (15-year-olds) and gingivitis (3-, 5-, 15-, 20-, and 60-year-olds). The frequency of individuals with one or more periodontal pockets (> 4 mm) increased with age. In 1993 the bone level at the age of 40 years corresponded to the bone level at the age of 20 years in 1973. The percentage of endodontically treated teeth was lower in 1993 in all age groups than in 1973 and 1983. The percentage of endodontically treated teeth with periapical or juxtaradicular destructions was unchanged in all three studies. The comparison of the three studies from 1973, 1983, and 1993 shows that there has been a great improvement in oral health over this 20-year period. In 1993, however, the increasing number of decayed/filled tooth surfaces in the 15- and 20-year-olds and an increase in plaque and gingivitis in some younger age groups calls for special attention.

Adolescent↗
PubMed1994

A radiological inventory of possible sites for cylinder implants in edentulous regions of the jaws. An epidemiological study.

Implant treatment is nowadays requested as an alternative mode of treatment for both total and partial edentulousness. The purpose of the study was to assess the maximum number of possible implant sites in a group of adults. The study material comprised 579 persons divided into the age-groups 20, 30, 40, 50, 60 and 70 years. Based on radiological examination, the subjects were grouped according to Eichner's index. They comprised both dentate and edentulous individuals. Templates, marked with cylinder implants of different dimensions, were placed over edentulous regions. The possible number of cylinder-shaped endosseous implants that could be placed anterior to the second molar was assessed in relation to bone availability and anatomical structures. Gaps treated with fixed bridges were not registered. Altogether 1,048 presumptive fixture sites were marked, of which 78% in the age-groups 60 and 70 years. Eichner groups C 1-3, which comprised the edentulous persons, constituted 12% of the subjects and accounted for 57% of the possible number of implants. All edentulous mandibles and 70% of the edentulous maxillae were judged suitable for placement of implants. On average 5.5 and 5.8 sites were marked per edentulous maxilla and mandible, respectively. Groups B1-4 comprised 21% of the subjects and accounted for 37% of the implants. It is discussed that implant treatment in totally edentulous jaws will increase in relative terms in Sweden as in other Scandinavian countries, i.e. the percentage of edentulous jaws treated with implants will increase. In absolute terms, however, the treatment will probably decrease owing to a marked decrease in the number of edentulous individuals. The future need for implant treatment in the residual dentition will probably increase but it is difficult to predict by how much.

Adult↗
PubMed1993

Periodontal disease experience in adult long-duration insulin-dependent diabetics.

The aim of this study was to analyse periodontal disease experience in 40- to 70-year-old, sex-matched insulin-dependent diabetics and non-diabetics. The study involved 83 diabetics and 99 non-diabetics. The clinical and radiographic examination comprised recordings of number of teeth, presence of plaque, gingival conditions, probing pocket depth and alveolar bone level (main variable). Diabetics aged 40 to 49 years had more periodontal pockets > or = 6 mm and more extensive alveolar bone loss than non-diabetics in the same age-group. There was also a significantly higher number of subjects belonging to classification groups with severe periodontal disease experience among diabetics in that age-group. In the age-groups 50-59 and 60-69 years, no major differences were found. The disease duration in these 3 age groups was 25.6 years, 20.5 years and 18.6 years, respectively, and the age of onset thus appears to be an important risk factor for future periodontal destruction.

Adult↗
PubMed1992

Periodontal conditions around tipped and upright molars in adults. An intra-individual retrospective study.

In 69 individuals from a randomized epidemiological material comprising 450 adults, an intra-individual comparison of the periodontal condition of 73 mesially tipped molars (30 degrees or more to a line perpendicular to the occlusal plane) and contralateral upright molars was made. The alveolar bone level mesially and distally of each tooth was registered in periapical radiographs. The occurrence of plaque, gingivitis and probeable pocket depths of 4 mm or more mesially and distally of each tooth was registered. No significant differences between tipped and upright molars could be found, regardless of the variable tested. The clinical implications of the findings are discussed from an orthodontic as well as a periodontal and prosthetic point of view.

Adult↗
PubMed1992

Frequency distribution of individuals aged 20-70 years according to severity of periodontal disease experience in 1973 and 1983.

The aim of this study was to compare changes in periodontal status of a Swedish population over a 10-year period expressed as frequency distributions of individuals according to severity of periodontal disease experience. The study involved 600 randomly selected individuals evenly distributed into age groups 20, 30, 40, 50, 60 and 70 years, examined in 1973 and another randomly selected group of 597 individuals similarly age distributed and examined in 1983. Based on clinical data and full mouth intraoral radiographs all individuals were classified into 5 groups according to severity of periodontal disease experience. In 1983, 23% of the individuals were classified as having healthy periodontal tissues, group 1, compared to 8% in 1973. The changes were most pronounced in the age groups 20 and 30 years, among whom 58% and 35%, respectively, were registered as having healthy periodontium in 1983. The prevalence of individuals with gingivitis without signs of lowered periodontal bone level, group 2, was 22% in 1983 compared to 41% in 1973. In all, 49% of the dentate population in 1973 and 45% in 1983 showed no marginal alveolar bone loss. Moderate periodontal bone loss, group 3, was found in 41% of the population in 1983 compared to 47% in 1973. Among 30-, 40-, and 50-year-olds, there were more, and among 60- and 70-year-olds, fewer individuals in this group in 1983 compared to 1973. 96% of the dentate population were classified as belonging to groups 1, 2 or 3 in 1973 compared to 86% in 1983.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMed1992

Location of the mucogingival junction 18 years after apically repositioned flap surgery.

The apically repositioned flap procedure, by definition, implies that the mucogingival junction (MGJ) is shifted into an apical location. That this actually would be the case has never been shown in long-term studies. The 13 subjects in the present study had during the years 1964-1965 received treatment of moderately advanced periodontal disease (probing pocket depths less than or equal to 5 mm) in the lower jaw. An apically repositioned flap (ARF) procedure was applied in the left or right half of the mandible and a gingivectomy (GE) was performed in the contralateral side. Starting in December 1981, the patients were recalled for clinical and radiographic determination of long-term results. The width of the band of keratinized gingiva was measured clinically and the distance from the MGJ to the lower border of the mandible (LBM) was measured from orthopantomograms. Slightly less keratinized gingiva was observed on the sides where GE had been used. There was no statistically significant difference in the orthopantomographic distance from the MGJ to the LBM between ARF and GE operations. The results indicate that the apically repositioned flap procedure does not result in a permanent apical shift of the MGJ.

Aged↗
PubMed1991

Long-term prognosis of extensive polyunit cantilevered fixed partial dentures.

The aim of this retrospective study was to elucidate the long-term prognoses of extensive fixed partial dentures including unilateral or bilateral polyunit cantilevers in patients with healthy but reduced periodontal support. Following periodontal therapy 36 cross-arch fixed partial dentures with two or more cantilever units unilaterally or bilaterally were fitted in 34 patients. In the prosthodontic design, special attention was given to the retention to long parallel preparations, to the dimensions of the framework, and to the occlusal design. After completion of therapy, the patients were enrolled in a regular maintenance care program and followed up for a period of 5 to 12 years. During this follow-up period one abutment tooth was fractured in one patient. One fixed partial denture with extremely reduced periodontal support was lost as a result of complete periodontal breakdown from occlusal trauma. For 33 fixed partial dentures, neither periodontal nor technical complications occurred.

Dental Abutments↗
PubMed1991

Periodontal healing after impacted lower third molar surgery in adolescents and adults. A prospective study.

The effects of impacted lower 3rd molar surgery on periodontal tissues in the adjacent 2nd molar area have been investigated in a prospective study comprising 176 cases from 2 age groups: less than or equal to 20 years (n = 93) and greater than or equal to 30 years (n = 83), respectively. The preoperative and 1-year postoperative examinations included both clinical and radiographic variables. All patients were subjected to a standardized surgical procedure and optimal plaque control pre-, intra- and postoperatively. Early removal of impacted lower 3rd molars with large angulation and close positional relationship to the adjacent 2nd molar proved to have a beneficial effect on periodontal health.

Adolescent↗
PubMed1991

The influence of anatomical, pathophysiological and other factors on periodontal healing after impacted lower third molar surgery. A multiple regression analysis.

A multifactorial approach has been used to identify some predictors of postoperative intrabony defects (IBD) on the distal surface of the adjacent second molar (M2) after impacted lower third molar (M3) surgery. The material consisted of 215 lower third molar removals, performed on 144 persons (age range 16-53 years; mean 27.2 years). The postoperative examination took place 2 years after impaction surgery and included both clinical and radiographic variables. Statistically significant (5% significance level) predictors of IBD found in stepwise multiple regression analyses were: (1) preoperative intrabony defect M2 distal; (2) age at the time of surgery; (3) size of contact-area M3/M2; (4) root resorption M2 distal; (5) probing dept distal surface of adjacent first molar postoperatively; (6) pathological follicle M3. The regression model with IBD as regressand produced a total R2 of 0.45. When the regressand was the difference between IBD and the preoperative intrabony defect, the regression analysis explained 62% of the variance (R2 = 0.62). These regression models explained the variance in terms of the size of the remaining postoperative intrabony defect as well as in terms of periodontal healing after impacted lower third molar surgery.

Adolescent↗
PubMed1991

Vitamin B status and response to replacement therapy in patients with burning mouth syndrome.

The aim of the study was to determine, in a group of patients with therapy-resistant burning mouth syndrome (BMS), the possible deficiency of vitamins B1, B2, and B6 and the effect of proper vitamin replacement therapy. Sixteen individuals, aged 47 to 81 years, participated in the study. All underwent a base-line examination comprising anamnestic information, subjective assessment of symptoms, dietary registration, salivary analysis, and serum analysis of thiamine (B1), riboflavine (B2), and pyridoxine (B6). Fifteen individuals had low thiamine and/or riboflavine levels in accordance with suggested levels in the literature and were given replacement therapy. No effect on BMS of vitamin replacement therapy or placebo therapy could be demonstrated.

Aged↗
PubMed1990

An individual tooth wear index and an analysis of factors correlated to incisal and occlusal wear in an adult Swedish population.

The aim of the study was to introduce an individual tooth wear index and to use this index to investigate factors correlated to occlusal wear. The material consisted of 585 randomly selected dentate individuals from the community of Jönköping, Sweden, who in 1983 reached the age of 20, 30, 40, 50, 60, 70, or 80 years. The degree of incisal and occlusal wear was evaluated for each single tooth in accordance with criteria presented earlier. An individual tooth wear index, which made it possible to rank individuals in accordance with incisal and occlusal wear, was used as dependent variable to investigate factors related to incisal and occlusal wear. Of all factors analyzed, the following were found to correlate significantly with increased incisal and occlusal wear: number of existing teeth, age, sex, occurrence of bruxism, use of snuff, and saliva buffer capacity. Stepwise multiple regression analysis gave a total explanation factor of R2 = 0.41. It was also possible to distinguish well between groups of individuals with and without tooth wear by means of these factors.

Adult↗
PubMed1989

Prognostic factors in synovial sarcoma.

The authors analyzed the prognosis in a population-based series of 24 patients with primary synovial sarcoma in the extremities (22) and trunk wall (two), all of whom were principally treated by surgery. No patient had evidence of metastatic disease at the time of diagnosis of the primary tumor. After 3 to 19 years of follow-up, six patients had developed local recurrence and 12 had died of metastatic disease including those six with local recurrence. All patients with tumors smaller than 4 cm were alive without evidence of disease, as were also four of the five patients who had larger tumors, but with a mitotic rate lower than 15 per 10 high-power fields. The association between local recurrence and metastatic disease may be more statistical than causal, since patients with both these events had more often larger tumors with a high mitotic rate.

Adolescent↗
PubMed1989

Periodontal conditions in insulin-dependent diabetics.

The aim of this study was to compare the prevalence and severity of periodontal disease in age- and sex-matched adult long- and short-duration insulin-dependent diabetics and non-diabetics. The study involved 82 subjects with long- and 72 with short-duration diabetes and 77 non-diabetics, all aged 20-70 years. The clinical and radiographic examination comprised recordings of the number of existing teeth, absence or presence of plaque and supra- and subgingival calculus, gingival conditions, probing pocket depth and alveolar bone level. There were no significant differences in the number of existing teeth or presence of plaque and supra- and subgingival calculus between long- and short-duration diabetics and non-diabetics. Diabetics, irrespective of the duration of the disease, had a higher prevalence of sites with gingivitis than non-diabetics. Overall, there were no significant differences between the groups regarding the prevalence of tooth surfaces with probing pocket depths of 4 and 5 mm. However, on comparison between age subgroups, long-duration diabetics younger than 45 years had significantly more 4 and 5 mm pockets than non-diabetics. Long-duration diabetics altogether had significantly more tooth surfaces with probing depth greater than or equal to 6 mm than non-diabetics. The radiographs of alveolar bone height exhibited significantly more extensive alveolar bone loss in long-duration diabetics aged 40-49 years than in short-duration diabetics and non-diabetics. This, together with the increased number of subjects belonging to classification groups with severe periodontal disease experience among long-duration diabetics, indicates more periodontal disease in these diabetics.

Adult↗