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Padjadjaran Journal of Dentistry
Published by Universitas Padjadjaran
ISSN : 19790201     EISSN : 25496212     DOI : -
Core Subject : Health, Science,
Biochemistry, Genetics & Molecular Biology Dentistry Health Professions Immunology & microbiology Medicine & Pharmacology Public Health
Padjadjaran Journal of Dentistry or known as PJD, is an English-language scientific periodicals published by the Faculty of Dentistry Universitas Padjadjaran thrice a year on every March, July and November. The submission process of manuscript is open throughout the year. All submitted manuscripts will go through the double-blind peer review and editorial review before being granted with acceptance for publication. Designed as a medium of information and scientific knowledge, Padjadjaran Journal of Dentistry publishes numerous research articles, in the area of Oral Biology, Dental Material Science and Technology, Oral and Maxillofacial Surgery, Pedodontics, Dental Public Health and Community Dentistry, Conservative Dentistry, Periodontics, Prosthodontics, Orthodontics, Oral Medicine, Dental Radiology, as well as with their development through interdisciplinary and multidisciplinary approach. Initially published as Padjadjaran Journal of Dentistry (PJD) magazine ISSN 1979-0201(print) on 2007 in form of printed issues. In 2017, the magazine had its online published version under the same with ISSN 2549-6212 (online) in accordance with the policy of LIPI. Padjadjaran Journal of Dentistry has been using Open Journal System requiring all writers to register in advance before they are allowed to upload the manuscript they write online. Afterwards, the editors, peer reviewers, and writers can monitor the manuscript processing. Several other changes are informed in the Journal History.
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Articles 12 Documents
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Search results for , issue "Vol 31, No 2 (2019): July 2019" : 12 Documents clear
Effect of lemon on saliva and Staphylococcus aureus Batubara, Natasya Angelyna; Lindawati, Yumi
Padjadjaran Journal of Dentistry Vol 31, No 2 (2019): July 2019
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (223.703 KB) | DOI: 10.24198/pjd.vol31no2.17955

Abstract

Introduction: Lemon juice contains citric acid. It is a highly antibacterial organic acid by gargling with, will be able to decrease the spreading of Staphylococcus aureus colony in saliva. The acid stimulation of lemon juice able to increase salivary secretion. The purpose of this study was to see the effect of gargling lemon juice of 100%, 50%, 25%, and 12.5% concentrations towards the salivary flow rate, salivary pH, the number of Staphylococcus aureus colony, and also, correlation between salivary flow rate and pH, salivary flow rate and number of Staphylococcus aureus colony, and salivary pH and number of Staphylococcus aureus colony. Methods: This research conducted with a pre-and-post-test group design. Saliva was taken from 24 subjects before and after the subjects gargled with lemon juice. Measurements performed were salivary flow rate per minute, and salivary pH (using pH Hanna Instrument). The Staphylococcus aureus bacteria were placed in a Mannitol Salt Agar for 24 hours at 370C temperature, then the number of the colonies were counted (x103 CFU). Results: The Wilcoxon test results showed that lemon juice with 100%, 50%, 25%, and 12.5% concentrations significantly increased the salivary flow rate and decreased the number of Staphylococcus aureus colony (p < 0.05). The result of the paired t-test showed that lemon juice with 25% and 12.5% concentration decreased the salivary pH significantly (p<0,05). The Pearson’s correlation results showed no significant correlation between salivary flow rate and salivary pH, flow rate and the number of Staphylococcus aureus colony, and salivary pH and number of Staphylococcus aureus colony. Conclusion: Lemon juice can decrease the salivary pH and the number of Staphylococcus aureus colony, but increases the salivary flow rate. It is considered to be good enough as one of the ingredients of mouthwash.Keywords: Flow rate, lemon, pH, saliva, Staphylococcus aureus
Comparison of the quality of the result of digitising panoramic analogue films using transmission and reflection scanner mode with direct digital imaging standard Azhari, Azhari; Gianto, Gianto; Suprijanto, Suprijanto
Padjadjaran Journal of Dentistry Vol 31, No 2 (2019): July 2019
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (594.104 KB) | DOI: 10.24198/pjd.vol31no2.21155

Abstract

Introduction: The use of panoramic x-ray radiographs with analogue film negatives is still widely used. Contrast differences in the radiograph are determined by the level of light transmitted from the viewer to the film negative and visual perception of the radiologist, which can cause differences and errors of interpretation. This study was aimed to compare the quality of scanners produced by the transmission and reflection modes objectively with direct digital imaging standard. Methods: This study used a descriptive comparative design with purposive sampling method. Radiographic analysis was conducted towards 30 analogue radiographs of Radiology laboratory of Universitas Padjadjaran Dental Hospital. Digitisation was performed using a scanner with setting modes (reflection and transmission, 8-bit intensity resolution and spatial resolution of 800 dpi). Digitising the negative radiographs of analogue films into digital radiographs will get a range of percentage pixels. Histogram of radiographs with a percentage of pixels in the grey level range 0 - 64 exceeds 50%, including "under-exposed", in the grey level range 192 - 255 exceeding 50%, including "over-exposed". The evaluation was carried out to observe the radiograph exposure homogeneity by dividing the radiograph into 4 parts. Each part was calculated as the mean pixel value; then the standard deviation was searched for the four mean values (STDMI - standard deviation mean intensity) determined the homogeneity. Results: Digitising type of radiograph reflection was included under-exposed because the percentage of pixels in the grey level range 0 - 64 was 86.94%. STDMI consecutive reflection = 8.03, transmission = 18.05, direct digital imaging = 20.86. Conclusion: Digitisation with scanner transmission mode is the best result objectively because it approaches the quality value of direct digital imaging standard.Keywords: Objective quality, homogeneity, reflection, transmission

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