摘要:

summaryThe aim of this study was to investigate whether older people having missing posterior teeth had few impacts and considered their teeth and mouth acceptable. The main objective was to assess the relationship between satisfaction with teeth and mouth, and the number, position and condition of the natural teeth. The sample was an employed unrepresentative population most of whom were in daily contact with the public. There was a very poor association between reported satisfaction with teeth and the number of standing teeth. There was little difference in satisfaction with dental and mouth status and the number of functional posterior occluding pairs (POPs). Satisfaction with the number and position of the functional POPs was not statistically significantly different in those with more or less than four POPs. However, there was slightly more satisfaction with teeth in the group with more than four POPs. Overall, those with more molar and premolar pairs were most satisfied with their teeth.

ISSN:0305-182X    

DOI:10.1111/j.1365-2842.1995.tb01191.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

summaryThe aim of this study was to evaluate clinically and histologically the use of a synthetic bone graft (Ionogram®) alone and in combination with guided bone regeneration (GBR) to facilitate bone regeneration and augmentation around exposed implant threads. Five male Beagle dogs were used in this investigation. Prior to the study all 3rd and 4th premolars were extracted. After 3 months, a flap was elevated and two Brånemark implants were inserted in each quadrant in such a way that two‐three threads remained exposed over the alveolar bone. On the control sites the synthetic bone graft was then placed around the exposed threads and the flaps were repositioned and sutured. On the test sites, the same procedure was performed, but an expanded polytetrafluoroethylene barrier was placed to cover the bone graft and implants. Three months after implant placement, the barriers on the test sites were removed, healing abutments were inserted on all implants, and a thrice weekly plaque control regime was initiated. The following clinical parameters were measured at 1, 2 and 3 months: Plaque Index, Gingival Index, Probing Depth and Clinical Attachment Level. Three months after abutment connection the animals were killed and specimens were obtained for histological evaluation. Clinical parameters revealed a significant improvement on the experimental sites compared to control sites during the 3 month loading phase. Histological analyses, however, could not determine a difference in the nature of the implant/ tissue interphase between experimental and control sites. In both groups graft particles were surrounded by dense fibrous connective tissue with limited evidence of new bone formation or osseointegration only in areas close to the alveolar cr

ISSN:0305-182X    

DOI:10.1111/j.1365-2842.1995.tb01192.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

ISSN:0305-182X    

DOI:10.1111/j.1365-2842.1995.tb01193.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

summaryThe silicoater technique, or silicoating, is a chemical bond system (makes mechanical retentions unnecessary) which prevents the rising of a gap in the margin area between resin and metal. This procedure solves the problems of fracture and detachment of the veneer or its discolourization. The purpose of this investigation was to find out the values of the bond strength achieved by using the silicoater technique on Ag‐Pd alloy with smooth surface and with mechanical retentions on the surface. Ninety specimens were divided into groups subjected to water storage and thermocycling. The values of the bond strength were investigated in combination with this technique with Ag‐Pd alloy and three veneer materials. The silicoater technique gave the best results in combination with Dentacolor XS veneer material and mechanical retentions on the surface of the dental al

ISSN:0305-182X    

DOI:10.1111/j.1365-2842.1995.tb01194.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

summaryThe assessment of an edentate patient's ability to adapt to new dentures is still a problem in prosthetic treatment. In this study the oral and manual motor abilities were compared with a patient's ability to adapt in 60 experienced denture wearers who had new dentures inserted 2–3 weeks before the experiment. To assess the oral muscular co‐ordination ability a modification of the muscular ability (MA) test was used. To determine the manual motor ability a ‘pinhole‐board’ test and a ‘margin‐cutting’ test were employed. The degree of adaptation to the new dentures was assessed by a questionnaire. The results show that a patient's age only roughly indicates the capability of adaptation. In contrast to the manual motor ability, the oral motor ability seems to correlate to the patient's adaptation to new dentures (r=0.55). The manual motor ability was clearly more strongly (r=0.61) age‐related than the oral motor ability (r=0.33). The permanent altered oral perception through denture wearing and a training effect by the permanent challenge of intra‐oral denture manag

ISSN:0305-182X    

DOI:10.1111/j.1365-2842.1995.tb01195.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

summaryThe historical and general use of shellac is discussed and its particular value in dentistry outlined. The effects of variations in the mica and aluminium content of shellac are evaluated. Measurements of elastic modulus, modulus of rupture and glass transition temperature are reported.

ISSN:0305-182X    

DOI:10.1111/j.1365-2842.1995.tb01196.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

summaryThis review shows that experimental occlusal interferences (prematurities) may cause changes in the myoelectric contraction patterns of the human jaw muscles, and changes in the translatory motion patterns of the human mandible. However, it has not been unequivocally established that the observed changes have specific long‐term detrimental effects. On the other hand, it is apparent that experimental occlusal interferences are associated with short‐term clinical symptoms and signs, such as jaw muscle fatigue and pains, headaches, pains and clickings in the temporomandibular joints. This review suggests that new paradigms involving experimental occlusal interferences should be introdu

ISSN:0305-182X    

DOI:10.1111/j.1365-2842.1995.tb01197.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

summaryIn 12 subjects, a rigid unilateral intercuspal interference (minimum mean height of 0.24 mm) was placed on either the right or left mandibular second premolar and first molar (sagittal physiological equilibrium point of the hemimandibular dental arch). During brisk and forceful clenching on the interference, bipolar surface electromyograms were obtained from the right and left masseter muscles. On the side opposite the interference, myoelectric clenching activity was significantly reduced. Correlation analyses showed that the interference elicited a non‐linear (complex) co‐ordination of the amplitude, but not the duration, of bilateral masseteric, clenching activity, i.e. frequently there was significant motor facilitation on the side of the interference, and significant motor inhibition on the side opposite the interference. Theoretical considerations predicted that brief clenching on the interference would easily lead to frontal plane rotatory motions of the mandible which, indeed, occurred clinica

ISSN:0305-182X    

DOI:10.1111/j.1365-2842.1995.tb01198.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

summaryConventional glass‐ionomer cements with varying amounts (5–15%) of borax (Na2B4O7.10H2O) as modifier were prepared. These mixtures were spatulated with an aqueous solution of polyacrylic acid with a powder to liquid (P/L) ratio of 1.5:1. Properties such as working time, setting time, compressive strength, diametral tensile stength, solubility and fluoride release of these cements were determined. It was observed that the working time and setting time of the resultant cements shortened with the addition of borax. Certain physical properties such as compressive and diametral tensile strength, solubility and disintegration of these glass‐ionomer cements deteriorated with borax addition but fluoride release from them was unaff

ISSN:0305-182X    

DOI:10.1111/j.1365-2842.1995.tb01199.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY