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Objectives: Cognitive screening via telehealth is increasingly employed, particularly during the COVID‐19 pandemic. Telephone adaptations of existing cognitive screening tests must be validated across diverse populations. The present study sought to evaluate an existing 26‐point telephone adaptation of the Mini‐Mental State Examination (tMMSE) in a sample of older Aboriginal Australians. Additionally, we aimed to evaluate a telephone adaptation of the urban version of the Kimberley Indigenous Cognitive Assessment short‐form (tKICA screen). Methods: A sub‐sample (n = 20) of participants (aged 55–69 years; 11 women) who had completed an in‐person cognitive assessment (MMSE and KICA screen) within the past 6 months as part of the Koori Growing Old Well Study completed telephone‐based cognitive testing without an assistant. Results: There was moderate correlation and reasonable agreement between MMSE versions (rs = 0.33; p = 0.2), although the limits of agreement were unacceptably wide (−4.1 and 4.8 points difference). Poorer performance was seen on the tMMSE for Season (p = 0.02) and Phrase (p = 0.02) items, and better performance for three‐word Recall (p = 0.03). KICA‐screen versions were poorly correlated (rs = 0.20; p = 0.4) with telephone scoring a mean of 2.17 points below the face‐to‐face score, greater bias observed at the lower end of the performance and worse scores for Season (p = 0.02) and Recall (p = 0.001) items. Age and education were not associated with telephone screening performance. Hearing impairment was associated with poorer performance on the tKICA screen (p = 0.04) but not the tMMSE (p = 0.6). Conclusions: Results indicate that telephone administration of the MMSE and/or KICA screen is not equivalent to in‐person testing for older Aboriginal people, and further revision and evaluation are required. [ABSTRACT FROM AUTHOR]

Objectives: This study examined the in vitro fatigue resistance of maxillary premolars with 2 mm or 3 mm preserved cusp thicknesses restored with lithium disilicate onlays. Materials and Methods: Premolars(N = 48) were divided into six groups. Onlays for groups 1 to 4 preserved a 3 mm functional (G1), 2 mm functional (G2), 3 mm nonfunctional (G3), or 2 mm nonfunctional (G4) buccal‐lingual cusp width. Onlays for group 5 (G5, control) replaced both cusps. Group 6 (G6) samples were identical to G1 with added retentive boxes. Lithium disilicate onlays were exposed to thermocycling (10 000 cycles, 5°C‐55°C, 30s/cycle) and mechanical loading (1.2 million cycles at 1.4 Hz and 70 N). All samples were examined for onlay debonding or cusp or onlay fracture. Results: Failure rates were 75%(G1), 0.0%(G2), 12.5%(G3), 0.0%(G4), 0.0%(G5), and 0.0%(G6). The difference in percent failure between the groups preserving the functional cusps (37.5%) and the groups preserving the nonfunctional cusps (6.3%) was statistically significant (P =.04; 95%CI:2.11‐55.66). No cusp or restoration fractures were observed; all failures were due to debonding of the restoration. Conclusion: Teeth with thin remaining cusps that were restored with bonded lithium disilicate onlay restorations were not prone to fracture. Retentive preparation features that physically eliminated lateral displacement prevented onlay debonding even though the ceramic‐enamel margin was directly at the occlusal contact. Clinical significance: The use of adhesively retained lithium disilicate ceramic onlays may be a viable alternative to full coverage restorations and may challenge traditionally accepted principals related to preparation resistance and retention form of ceramic partial coverage restorations. [ABSTRACT FROM AUTHOR]

Objectives: To determine preferences for health and aged care services in Aboriginal and Torres Strait Islander Australians and explore related factors. Methods: Mixed‐method, cross‐sectional study including 336 Aboriginal and Torres Strait Islander people aged 60 years and older from regional and urban areas. Results: Exclusive preference for Aboriginal Community Controlled services was most common. This preference significantly increased when preferences for, and use of, aged care and disability services were considered. The likelihood of holding an exclusive preference for Aboriginal Community Controlled services was higher in regional settings compared to urban and in those reporting lower engagement in traditional activities during childhood. Conclusions: These findings suggest that the majority of older Australian Aboriginal and Torres Strait Islander people prefer aged and disability care provided by Aboriginal services. Given the anticipated increase in service demand in this population, there is a growing need for culturally safe services, particularly in regional settings. [ABSTRACT FROM AUTHOR]

The effect of staining and vacuum sintering on optical properties and the bi-axial flexural strength of partially and fully stabilized monolithic zirconia (PSZ, FSZ) were evaluated. Disc-shaped specimens divided into three subgroups (n=15): non-stained, stained and non-stained with vacuum sintering. After staining and sintering, optical properties were evaluated using a reflection spectrophotometer and bi-axial flexural strength was tested using the piston-on-three balls technique. Statistical analysis was performed using multivariate analysis of variance (MANOVA) followed by post-hoc Tukey's tests (p<0.05). Staining decreased translucency parameter (TP) values of FSZ (p<0.05). Sintering under vacuum enhanced TP values for PSZ (p<0.05). Staining enhanced surface gloss for both types of zirconia (p<0.05). Staining increased bi-axial flexural strength of FSZ (p<0.05), while it decreased the strength of PSZ (p<0.05). Sintering under vacuum provided minimal benefits with either type of zirconia. [ABSTRACT FROM AUTHOR]