| 1. |
- Fure, Solveig, 1941, et al.
(författare)
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Evaluation of the chemomechanical removal of dentine caries in vivo with a new modified Carisolv gel.
- 2004
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Ingår i: Clinical oral investigations. - : Springer Science and Business Media LLC. - 1432-6981 .- 1436-3771. ; 8:3, s. 139-44
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Tidskriftsartikel (refereegranskat)abstract
- Carisolv is a minimally invasive method for softening and removing dentine caries. A new, modified Carisolv gel has been developed in order to optimise the efficiency if its chemical caries dissolution. The aim of the present study was to compare the caries removal efficiency of the original gel with that of the new gel, which contains almost double the concentration of sodium hypochlorite. Ten dentists treated 202 cavities in 170 patients; 104 cavities were randomised to the new gel and 98 to the original gel. Their mean treatment times for caries removal were 6.7+/-4.1 min and 7.6+/-4.2 min, respectively ( P>0.05). In close-to-pulp lesions, constituting 32% of the cavities, the mean times for caries removal were 9.0+/-7.0 min and 11.6+/-4.4 min for the new and original gels, respectively ( P<0.01). Questionnaires revealed that 81% of the patients preferred chemomechanical treatment to drilling. In conclusion, the improved efficiency of the modified Carisolv gel did reduce the time for caries removal in deep lesions. However, it still needs more time than conventional drilling.
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| 2. |
- Liedberg, Birgitta, et al.
(författare)
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Masticatory and Nutritional Aspects on Fixed and Removable Partial Dentures
- 2004
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Ingår i: Clinical Oral Investigations. - : Springer Science and Business Media LLC. - 1432-6981 .- 1436-3771. ; 8:1, s. 11-17
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The aim of the present study was to evaluate mastication, food selection and nutritional aspects in two groups of persons restored with fixed (FPD, N=44) and removable (RPD, N=40) partial dentures respectively. The subjects were part of a cohort study of 67-68-year-old men living in Malmö, Sweden. The two groups were very similar regarding social factors and the inclusion criteria were chosen so that the groups were very equal regarding oral factors, apart from the difference in fixed and removable partial dentures. The number of natural teeth, number of replaced teeth and occlusal contacts did not differ significantly between the two groups, nor did the distribution of maxillary and mandibular dentures. A comprehensive examination of several general health factors included a home interview of dietary habits. A clinical examination included a 20-minute oral examination with registration of number of teeth, FPDs, RPDs, and occlusal contacts. It also included masticatory tests: chewing gum colour mixing, chewing gum bolus shaping, and swallowing threshold (number of strokes to the first swallow of an almond). The consumption of hard and soft foods was revealed by the dietary interview as well as the intake of energy and some nutrients. There was a significant difference between the groups regarding the capacity to mix the two-coloured chewing gum, to shape the chewing gum bolus and in the consumption of hard foods. There was no difference in the swallowing threshold and the consumption of soft foods. The intake of energy and nutrients did not differ significantly between the groups. The differences in masticatory capacity found thus seem to have little, if any, effect on the factors of importance for general health. A reasonable explanation for the differences found is that artificial teeth that are well retained, such as FPDs, make more active chewing possible than do removable, and often somewhat loose-fitting partial dentures.
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| 3. |
- Persson, Anitha, et al.
(författare)
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Evaluation of a skin reference electrode used for intraoral pH measurements in combination with a microtouch electrode.
- 2004
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Ingår i: Clinical oral investigations. - : Springer Science and Business Media LLC. - 1432-6981 .- 1436-3771. ; 8:3, s. 172-5
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Tidskriftsartikel (refereegranskat)abstract
- The aim of this in vivo study was to evaluate a skin reference electrode used with the microtouch method for measurements of intraoral pH. Registrations of plaque pH were made in ten healthy subjects before and up to 30 min after a mouth rinse with 10% sucrose. A microtouch electrode (Beetrode) was used in combination with two different half-cell reference electrodes: a skin silver-silver chloride plate or a glass capillary reference electrode. The skin electrode was placed on the subject's forearm in combination with a conductive gel. The glass capillary electrode, together with one of the test subject's fingers, was placed in a beaker with a 3 M KCl solution. High agreement between the two reference systems resulted in almost identical plaque-pH curves (r=0.97). The mean differences between the two systems at the different time points varied between -0.15 and +0.01 pH units, with an overall mean pH difference of 0.03 pH units. It can be concluded that the use of the skin reference electrode may very well replace the traditional reference electrode used in combination with a microtouch electrode for intraoral use.
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| 4. |
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| 5. |
- Sunnegårdh-Grönberg, Karin, 1969-, et al.
(författare)
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Interfacial adaptation of a calcium aluminate cement used in class II cavities, in vivo
- 2004
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Ingår i: Clinical Oral Investigations. - : Springer-Verlag. - 1432-6981 .- 1436-3771. ; 8:2, s. 75-80
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Tidskriftsartikel (refereegranskat)abstract
- The aim of this in vivo study was to evaluate the interfacial marginal adaptation of a calcium aluminate cement, Doxadent (DD), and to compare it intra-individually with a resin composite, Tetric Ceram/Syntac Single-Component (TC/SS), in Class II cavities. Sixteen Class II box-shaped, enamel-bordered cavities were prepared in eight premolars scheduled to be extracted after 1 month's service for orthodontic reasons. The interfacial marginal adaptation (internal surfaces) of the restorations was evaluated by a quantitative scanning electron microscope analysis using a replica method. DD showed a statistically significant, lower degree of gap-free adaptation to enamel compared with TC/SS: 84% vs. 93%. To dentin, DD showed a significantly better adaptation than TC/SS: 72% vs. 49%. A high frequency of enamel fractures perpendicular to the margins was observed for the DD restorations, which may be explained by an expansion of the calcium-aluminate cement. It can be concluded that DD showed a better adaptation to dentin while TC/SS showed a better adaptation to enamel. The dimensional changes of DD have to be investigated before clinical use can be recommended.
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| 6. |
- Sunnegårdh-Grönberg, Karin, 1969-, et al.
(författare)
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Surface roughness of a novel "ceramic restorative cement" after treatment with different polishing techniques in vitro
- 2003
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Ingår i: Clinical Oral Investigations. - : Springer-Verlag. - 1432-6981 .- 1436-3771. ; 7:1, s. 27-31
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Tidskriftsartikel (refereegranskat)abstract
- The aim of this study was to determine the surface roughness of a novel calcium aluminate cement (CAC) intended for posterior restorations after treatment with different polishing devices in vitro. Forty-eight CAC specimens were polished with diamond burs at 15,550 rpm or 27,000 rpm, Sof-Lex discs, Jiffy points, Shofu silicone points, and Aaba universal polisher. Amalgam specimens were polished with Shofu silicone points and used as reference. Roughness was measured using a profilometer. The smoothest CAC surface was observed after use of the fine Sof-Lex disc (roughness average [Ra] 0.26 mm). Diamond burs at higher speed, points, and polisher gave rather similar results (Ra 0.58–0.72 mm). An increase in surface roughness could be seen from using diamond burs at lower speed (Ra 2.3 mm). Extra fine Shofu points and Sof-Lex discs as a final step reincreased surface roughness. Polished amalgam showed the smoothest surface in the study (Ra 0.17). It can be concluded that the smoothest CAC surfaces were obtained with the fine Sof-Lex discs. Different polishing points and diamond burs at higher speed, which are suitable polishing devices for posterior restorations, also gave relatively smooth surfaces.
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