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Cross-cultural adaptation and psychometric properties of the Indonesian version of theory of planned behavior questionnaire to measure dental attendance of children with hearing loss: A pilot study

Utami M, Setiawati F, Ahmad MS, Adiatman M

Spec Care Dentist, 2022 Feb 13.
PMID: 35152463 DOI: 10.1111/scd.12702

AIMS: To translate and evaluate the validity and reliability of the Indonesian version of the Theory of Planned Behavior (TPB) questionnaire concerning mother's behavior related to children's dental attendance.
METHODS AND RESULTS: The cross-cultural adaptation was tested in mothers with children aged 5-12 years old who have hearing loss. The validity and reliability of the online questionnaire were measured among 31 mothers of children with hearing loss in communities and Special School for Children with Hearing Loss in several regions in Indonesia. All indicators of attitude, subjective norms, and perceived behavior control (PBC) on mothers' behavior towards children's attendance was valid (p
Correlates of dental visits in children with hearing loss: An application of the theory of planned behaviour

Utami M, Setiawati F, Ahmad MS, Adiatman M

Int J Paediatr Dent, 2023 May;33(3):259-268.
PMID: 36336994 DOI: 10.1111/ipd.13036

BACKGROUND: Maintenance of oral health of children with special needs requires the involvement of caregivers who are also responsible for ensuring adherence to professional recommendations, including dental visits.
AIM: This study aimed at exploring the correlates of dental visits of children with hearing loss (CWHL) in Indonesia using the theory of planned behaviour (TPB).
DESIGN: This cross-sectional study involved purposive sampling methods, conducted via an online survey administered to mothers of CWHL who were aged 5-12 years. Constructs of the TPB model were collected, including the mother's attitudes, subjective norms, perceived behaviour control (PBC) and intention towards dental visits for CWHL. Dental visits were measured by asking whether their children had a dental visit within the last 12 months. Data were analysed using SPSS for descriptive and bivariate analyses. The significance level was set as p .05). Intention did not significantly predict the mother's behaviour towards children's dental visits (p > .05).
CONCLUSION: The TPB model revealed a construct associated with dental visit intention and behaviour in CWHL. This study suggested that effective promotion intervention should focus on the mother's PBC to increase parents' adherence to preventive dental visits in CWHL in Indonesia.
Fulltext Efficient photocatalytic bactericidal performance of green-synthesised TiO2/reduced graphene oxide using banana peel extracts

Utami M, Yenn TW, Alam MW, Ravindran B, Husniati, Purnama I, et al.

Heliyon, 2024 Feb 29;10(4):e26636.
PMID: 38420369 DOI: 10.1016/j.heliyon.2024.e26636

In this study, the fabrication of titanium dioxide/reduced graphene oxide (TiO2/rGO) utilising banana peel extracts (Musa paradisiaca L.) as a reducing agent for the photoinactivation of Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) was explored. The GO synthesis was conducted using a modified Tour method, whereas the production of rGO involved banana peel extracts through a reflux method. The integration of TiO2 into rGO was achieved via a hydrothermal process. The successful synthesis of TiO2/rGO was verified through various analytical techniques, including X-ray diffraction (XRD), gas sorption analysis (GSA), Fourier-transform infrared (FT-IR) spectroscopy, ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS), scanning electron microscope-energy dispersive X-ray (SEM-EDX) and transmission electron microscopy (TEM) analyses. The results indicated that the hydrothermal-assisted green synthesis effectively produced TiO2/rGO with a particle size of 60.5 nm. Compared with pure TiO2, TiO2/rGO demonstrated a reduced crystallite size (88.505 nm) and an enhanced surface area (22.664 m2/g). Moreover, TiO2/rGO featured a low direct bandgap energy (3.052 eV), leading to elevated electrical conductivity and superior photoconductivity. To evaluate the biological efficacy of TiO2/rGO, photoinactivation experiments targeting E. coli and S. aureus were conducted using the disc method. Sunlight irradiation emerged as the most effective catalyst, achieving optimal inactivation results within 6 and 4 h.
The potency of hydrothermally prepared sulfated silica (SO4/SiO2) as a heterogeneous acid catalyst for ethanol dehydration into diethyl ether

Pratika RA, Wijaya K, Utami M, Mulijani S, Patah A, Alarifi S, et al.

Chemosphere, 2023 Nov;341:139822.
PMID: 37598950 DOI: 10.1016/j.chemosphere.2023.139822

The dehydration of ethanol into diethyl ether over a SO4/SiO2 catalyst was investigated. The SO4/SiO2 catalysts were prepared by the sulfation method using 1, 2, and 3 M of sulfuric acid (SS1, SS2, and SS3) via hydrothermal treatment. This study is focused on the synthesis of a SO4/SiO2 catalyst with high total acidity that can be subsequently utilized to convert ethanol into diethyl ether. The total acidity test revealed that the sulfation process increased the total acidity of SiO2. The SS2 catalyst (with 2 M sulfuric acid) displayed the highest total acidity of 7.77 mmol/g, whereas the SiO2 total acidity was only 0.11 mmol/g. Meanwhile, the SS3 catalyst (with 3 M sulfuric acid) has a lower total acidity of 7.09 mmol/g due to the distribution of sulfate groups on the surface having reached its optimum condition. The crystallinity and structure of the SS2 catalyst were not affected by the hydrothermal treatment or the sulfate process on silica. Furthermore, The SS2 catalyst characteristics in the presence of sulfate lead to a flaky surface in the morphology and non-uniform particle size. In addition, the surface area and pore volume of the SS2 catalyst decreased (482.56-172.26 m2/g) and (0.297-0.253 cc/g), respectively, because of the presence of sulfate on the silica surface. The SS2 catalyst's pore shape information explains the formation of non-uniform pore sizes and shapes. Finally, the activity and selectivity of SO4/SiO2 catalysts in the conversion of ethanol to diethyl ether yielded the highest ethanol conversion of 70.01% and diethyl ether product of 9.05% from the SS2 catalyst (the catalyst with the highest total acidity). Variations in temperature reaction conditions (175-225 °C) show an optimum reaction temperature to produce diethyl ether at 200 °C (11.36%).