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The transversal strength of acrylic resin plate after being immersed soaking in noni fruit (Morinda citrifolia Linn.) juice Sri Redjeki Indiani
Dental Journal (Majalah Kedokteran Gigi) Vol. 41 No. 2 (2008): June 2008
Publisher : Faculty of Dental Medicine, Universitas Airlangga https://fkg.unair.ac.id/en

The disadvantages of acrylic resin plate are liquid absorption and porosity, allowing microorganisms to grow and multiply resulting in inflammation in the oral cavity. The juice of the noni fruit (Morinda citrifolia Linn.) contains active flavonoid and atsiri oil. Flavonoid is a phenol substance that degrades acrylic resin plate in prolonged contact. The purpose of this study was to examine the transversal strength of acrylic resin plate after being immersed in noni fruit juice. An acrylic resin plate of 65 × 10 × 2.5 mm was immersed in 4%, 6%, 8%, 10%, and 12% concentrations of noni fruit juice and distilled water in a control group for 31, 46, and 61 days. The transversal strength of acrylic resin plate was tested using an autograph with a crosshead speed of 1/10mm/second; the distance for the two supporting parts was 50 mm. The data was analyzed by using a One–Way ANOVA test. There was no significant difference in the transversal strength of the plate after being soaked for 31, 46, and 61 days in 4%, 6%, 8%, 10%, and 12% concentrations of the juice. This study showed that the soaking of acrylic resin plate for 31, 46, and 61 days in 4%, 6%, 8%, 10%, and 12% concentrations of noni fruit juice does not decrease the transversal strength.

Levels of crystalline silica dust in dental laboratorium of Dental Health Technology Study Program of Vocational Faculty, Universitas Airlangga Eny Inayati; Sherman Salim; Sonya Harwasih; Sri Redjeki Indiani
Dental Journal (Majalah Kedokteran Gigi) Vol. 48 No. 4 (2015): December 2015
Publisher : Faculty of Dental Medicine, Universitas Airlangga https://fkg.unair.ac.id/en

Background: Silicosis is an occupational lung disease caused by inhaling particles of crystalline silica in a long time. The disease then results in inflammation and defects in lung tissue. Prosthesis construction is usually conducted in dental laboratory using a lot of materials containing crystalline silica, such as gypsum, ceramics, planting material, sandblast and others. Purpose: This research aims to determine levels of crystalline silica dust in the dental laboratory of Dental Health Technology Diploma Study Program, Vocational Faculty, Universitas Airlangga. Method: Three measurement points was determined, namely point 1, point 2 and point 3 in each dental laboratory space (I and II). Suctioning dust was performed at those points using Low Volume Dust Sampler (LVDS). Samples taken were divided into two groups, namely X and Y. Taking dust samples were carried out for 30 minutes. Elements of crystalline silica contained in the dust were quantitatively measured using XR Defractometry tool, while size and morphology of silica were measured using SEM EDX tool. Data obtained were statistically analyzed by paired t test. Result: The results showed significant differences in the levels of the total dust measured and crystalline silica in the form of quartz and cristobalite among those two dental laboratory spaces. Conclusion: It can be concluded that the levels of the total dust and silica quartz dust in the dental laboratory spaces I and II were greater than the Threshold Limit Value (TLV) determined.

Lung Function Disturbance Based on Student Characteristic in Surabaya Dental Laboratory Eny Inayati; Sonya Harwasih; Sri Redjeki Indiani
Jurnal Vokasi Indonesia Vol 5, No 2 (2017): July - December
Publisher : Program Pendidikan Vokasi Universitas Indonesia

The dental technician program of Airlangga University teaches and trains aspiring dental technicians. During three years of study, students manufacture dental prostheses such as cobalt chromium coping and acrylic dentures and perform other procedures, such as crown and bridge restoration. However, the use of dental prostheses material might cause respiratory diseases, skin problems, and neurotoxicity. Few respiratory diseases have been reported related to the occupation of dental technician, and epidemiology studies have shown high prevalence of pneumoconiosis linked with exposure duration. Lung function disturbance severity in dental laboratories is affected by some factors, such as the characteristics of workers in such a setting. This study aims to investigate the lung function representation of students of the dental technician program of Airlangga University in relation to student characteristics in the dental laboratory. This study is an observational decriptive study. Data are obtained by using a questionnaire and a literature review, and lung physiological examination is conducted using spirometry. Examination data results are presented in the form of a ratio scale and analyzed by using descriptive statistics. Conclusion: No significant difference in lung function was observed between smokers and non-smokers and between mask-wearers and non-mask-wearers.

Lung Function Disturbance Based on Student Characteristic in Surabaya Dental Laboratory Inayati, Eny; Harwasih, Sonya; Indiani, Sri Redjeki
Jurnal Vokasi Indonesia Vol. 5, No. 2
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

The dental technician program of Airlangga University teaches and trains aspiring dental technicians. During three years of study, students manufacture dental prostheses such as cobalt chromium coping and acrylic dentures and perform other procedures, such as crown and bridge restoration. However, the use of dental prostheses material might cause respiratory diseases, skin problems, and neurotoxicity. Few respiratory diseases have been reported related to the occupation of dental technician, and epidemiology studies have shown high prevalence of pneumoconiosis linked with exposure duration. Lung function disturbance severity in dental laboratories is affected by some factors, such as the characteristics of workers in such a setting. This study aims to investigate the lung function representation of students of the dental technician program of Airlangga University in relation to student characteristics in the dental laboratory. This study is an observational decriptive study. Data are obtained by using a questionnaire and a literature review, and lung physiological examination is conducted using spirometry. Examination data results are presented in the form of a ratio scale and analyzed by using descriptive statistics. Conclusion: No significant difference in lung function was observed between smokers and non-smokers and between mask-wearers and non-mask-wearers.

COPING MANUFACTURED TECHNIQUE OF SPINELL SLIP CAST ALL CERAMIC BY CONVENTIONAL METHODS AND CAD/CAM Hidayatin, Insani; Indiani, Sri Redjeki; Ratwita, Rr. Dwiyanti Feriana
Journal of Vocational Health Studies Vol. 3 No. 1 (2019): July 2019 | JOURNAL OF VOCATIONAL HEALTH STUDIES
Publisher : Faculty of Vocational Studies, Universitas Airlangga

Background: Ceramic restorations is divided into two kindsnamelyPorcelain Fused to Metal (PFM) and all-ceramic restorations. In ceram spinell is one of the materials needed for manufacturing anterior coping of all ceramic which has better aesthetic than in other in ceram. Methods which have been done are Conventional Slip Cast by application of spinell paste on refractory die manually and CAD/CAM computer-based technique. The difference of mentioned previously methods is few step-in slips cast methods can be performed only by one step CAD/CAM methods. Purpose: To discover the differences between Conventional Slip Cast methods and CAD/ CAM methods. Review: Application of CAD/CAM methods has few advantages compared to conventional methods. Since few step-in conventional methods can be performed only one step in CAD/CAM methods. Conclusion: In order to shorten the time in manufacturing spinell all-ceramic, the dental technician may use CAD/CAM methods. Few advantages of CAD/CAM methods compare to slip cast methods are not necessary to do die to block out, die duplication, wetting agent spraying, vitasonic and ultrasonic usage, giving border by ink pen for determining application border, preparing spinell paste for coping application. Those steps all can be performed only by scanning, design, and milling by CAD/CAM methods. Besides that, coping result produced by CAD/ CAM methods has good accuracy due to spinell block utilization which has better homogenous composition.

PREVENTION AND CONTROL OF CROSS INFECTION AT DENTAL LABORATORIES IN EAST JAVA PROVINCE OF INDONESIA Inayati, Eny; Indiani, Sri Redjeki; Gofur, Nanda Rachmad Putra
Journal of Vocational Health Studies Vol. 4 No. 3 (2021): March 2021 | JOURNAL OF VOCATIONAL HEALTH STUDIES
Publisher : Faculty of Vocational Studies, Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jvhs.V4.I3.2021.125-130

Background: infectious disease is one major important health issue. Dental technician is an occupation which has a risk to get infectious disease transmitted from saliva, blood or contaminated tools if universal precaution utensils did not use properly. Infection can be transferred through dental impression from surface contact, handpiece, burs, pumice, aerosol etc. Purpose: This study aim to find out desinfection implementation in dental laboratories located in East Java as a preventive and controlling action towards cross infection. Method: Data were obtained through questionnaire, the questionnaires were designed to get the information related to infection control from dental laboratories in East Java. The survey was conducted in 36 dental laboratories listed by Association of Dental Technician in East Java. Result: As much as 90% dental laboratories did not performed desinfection procedure to the dental impression received from dentist and never follow any desinfection training. AS much as 95% Dental laboratories believe universal precaution utensils can be infected but only 50% utilize universal precaution utensils. Eventhough if such infection occurs, the owner will be fully responsible. Conclusion: Prevention and management towards cross infection control in dental laboratories located in East Java still very low. Development and supervision towards dental laboratories operational by Indonesian government and professional association need to be improved. Education regarding infection control need to be performed through trainings and inserted infection control matters in dental technician study programme curriculum in Indonesia.

PROCESSING REMOVABLE ORTHODONTIC APPLIANCE FOR SINGLE TOOTH ANTERIOR CROSSBITE USING EXPANSION SCREW Rusdiana, Elly; Goenharto, Sianiwati; Nirmala Ratna Harda, Sasadhara; Wahjuni, Sri; Indiani, Sri Redjeki
Journal of Vocational Health Studies Vol. 6 No. 3 (2023): March 2023 | JOURNAL OF VOCATIONAL HEALTH STUDIES
Publisher : Faculty of Vocational Studies, Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jvhs.V6.I3.2023.180-184

Background: Anterior crossbite is a case that when upper anterior are positioned palatally than lower anterior teeth in centric occlusion. Orthodontic appliances using expansion screw could be solution for tooth anterior crossbite treatment. Purpose: To figure out the optimal fabrication process of orthodontic appliances in single tooth anterior crossbite case using expansion screw. Case analysis: Dental laboratory provided the maxillary dental appliance with single tooth anterior crossbite on teeth 21. Dental technician also received orthodontic appliance using expansion screw. Result: Orthodontic appliance design was Adams claps on teeth 16, 26, labial bow on teeth 13, 12, 11, 21, 22, 23. Additional posterior bite plane, also expansion screw was located on maxillary left first incisor, palatal section. Conclusion: Design and making orthodontic appliances using expansion screw begins with drawing design, positioning Adams clasps and labial bow sectional screw mini mounting, then acrylic packing. Final step was finishing polishing acrylic plate.

FABRICATION OF ALL PORCELAIN CANTILEVER BRIDGE RESTORATION IN CASES OF GINGIVA RECESSION USING ZIRCONIUM DIOXIDE MATERIAL WITH ADDITIONAL RETENSION Pauline, Yobellivia; Inayati, Eny; Goenharto, Sianiwati; Setyowati, Okti; Kusdaryanti, Endang; Redjeki Indiani, Sri; Mia Laksmi Lita Rosa
Journal of Vocational Health Studies Vol. 8 No. 2 (2024): November 2024 | JOURNAL OF VOCATIONAL HEALTH STUDIES
Publisher : Faculty of Vocational Studies, Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jvhs.V8.I2.2024.148-154

Background: Aesthetic and functional dental restoration is a hope for people who have lost teeth, especially in the anterior region. Missing tooth 13 with more than 2 mm gingival recession can be made into a cantilever bridge restoration with the addition of porcelain gingiva. Gingival recession is when the tooth root surface is exposed due to periodontal tissue loss. Zirconia is a dental restoration material often used because of its biocompatibility, strength, and aesthetics. Purpose: To determine the procedure for making all porcelain cantilever bridge restorations in cases of gingival recession using zirconia material. Case analysis: The dental laboratory received a dental cast model of a 39-year-old female patient missing tooth 13 and had gingival recession on tooth 14 of more than 2 mm. Order in the form of restoration of all porcelain cantilever bridges from zirconia. Result: The cantilever bridge coping was made from zirconium dioxide and then layered with feldspathic porcelain to achieve optimal strength and aesthetics. A rest is made on tooth 12 to provide additional retention. Conclusion: The procedure for making all porcelain cantilever bridge restorations includes making diagnostic wax-up, scanning, coping design, milling, sintering, fitting, sandblasting, layering, anatomy, and glazing. Things that must be considered are the design, thickness of the coping, and connectors to achieve a restoration that is strong, resistant to fracture, and has good aesthetics. Porcelain gingiva was added in the cervical area of tooth 14 restorations to cover the recession

MAKING DIAGNOSTIC WAX UP OF MAXILLARY ANTERIOR TEETH IN CROSS BITE CASES Sri Redjeki Indiani; Sianiwati Goenharto; Anisa Nur Halimah; Widiya Ulfa; Narta Nikita Sari; Winda Kusumawardani; Dinda Nur Agustin
Journal of Vocational Health Studies Vol. 9 No. 1 (2025): July 2025 | JOURNAL OF VOCATIONAL HEALTH STUDIES
Publisher : Faculty of Vocational Studies, Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jvhs.V9.I1.2025.70-76

Background: An anterior crossbite is a type of malocclusion in which one or more maxillary anterior teeth are positioned lingually to the mandibular anterior teeth, compromising aesthetics and reducing patient confidence. A thorough understanding of the patient's chief complaint is essential for developing an effective treatment plan. A diagnostic wax-up is recommended to improve predictability and facilitate the modification of maxillary and mandibular relationship ultimately enhancing aesthetic outcome. Purpose: To describe the procedure for creating a diagnostic wax-up of the maxillary anterior teeth in an anterior crossbite case for aesthetic purposes. Case analysis: Maxillary and mandibular working models were received, showing an anterior reverse bite malocclusion, with an overjet of -3 mm and an overbite of 2 mm. The dentist requested a diagnostic wax-up of the maxillary anterior teeth to achieve optimal aesthetic results. Result: The master model was received, marked, occluded, and mounted on an articulator. Wax was then applied and shaped to refine the anatomy of tooth 21, with the point and line angles adjusted toward the center to create a smaller appearance while carefully considering the height and convexity. Wax restorations were made covering 6 anterior teeth from maxillary left canine to maxillary right canines with the occlusal relationships adjusted to approximate a normal appearance. Conclusion: The diagnostic wax-up procedure involves preparing the working models, establishing the median line, mounting the models on an articulator, and sequentially waxing teeth numbers 11 and 21 first, followed by teeth 12 and 22, and finally teeth 13 and 23. The overjet is increased to achieve a more normal maxillomandibular occlusion, followed by careful evaluation.

TEKNIK PEMBUATAN FIXED FIXED BRIDGE PFM PADA KEHILANGAN GIGI 41, 31, DAN 32, PADA RESORPSI ALVEOLAR DAN RONGAK KECIL Alga Meisha Purwanto; Winda kusumawardani; Sri Redjeki Indiani; Sianiwati Goenharto; Anisa Nur Halimah; Narta Nikita Indiani; Widya Ulfa
Dentin Vol 9, No 3 (2025)
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/dentin.v9i3.17919

ABSTRACT Background: Tooth loss is often accompanied by alveolar bone resorption and reduced edentulous space, leading to changes in bone morphology and imbalance of the dental arch. Alveolar resorption refers to the reduction in bone volume and height in the area of missing teeth, while reduced edentulous space is defined as a narrower space than the ideal dimension for prosthetic replacement. One method to restore function and aesthetics in cases of tooth loss is the fabrication of a fixed-fixed bridgeusing Porcelain Fused to Metal (PFM). Objective: To describe the fabrication technique of a fixed-fixed PFM bridge for the replacement of missing teeth 41, 31, and 32 associated with alveolar bone resorption and reduced edentulous space. Case: The working model presented missing teeth 41, 31, and 32 accompanied by alveolar bone resorption and reduced edentulous space, for which a fixed-fixed PFM bridge was planned. Conclusion: The fabrication of a fixed-fixed Porcelain Fused to Metal bridge for the replacement of teeth 41, 31, and 32 with alveolar bone resorption and reduced edentulous space begins with receiving the working model, followed by wax-up of the coping to cover the resorbed area. The line angles are slightly shifted toward the proximal surfaces to create the visual impression of wider teeth. This is followed by metal coping finishing and subsequent application of slurry, opaque, dentin, enamel, translucent, and pink ceramic at the cervical pontic area. The process is completed with staining and glazing to enhance porcelain color and luster, and final polishing of the collar to achieve a smooth and esthetic result.Keywords : alveolar bone resorption, fixed-fixed bridge, narrow space, pink ceramic, porcelain fused to metal (PFM) ABSTRAK Latar Belakang: Kehilangan gigi sering disertai resorpsi tulang alveolar dan rongak kecil yang menyebabkan perubahan bentuk tulang dan ketidakseimbangan lengkung rahang. Resorpsi alveolar adalah penurunan volume dan tinggi tulang di area gigi yang hilang. Rongak kecil adalah jarak edentulous yang lebih sempit daripada ukuran ideal. Salah satu cara mengembalikan fungsi dan estetika pada gigi yang hilang adalah dengan pembuatan gigi tiruan jembatan fixed-fixed bridge dengan bahan Porcelain Fused to Metal (PFM). Tujuan: Untuk menjelaskan teknik pembuatan teknik pembuatan gigi tiruan jembatan PFM pada kehilangan gigi 41, 31, dan 32 yang disertai resorpsi alveolar dan rongak kecil. Kasus: Pada model kerja terdapat kehilangan gigi 41, 31, dan 32 disertai resorpsi tulang alveolar dan rongak kecil yang akan dibuatkan fixed-fixed bridge PFM. Kesimpulan: Tahapan pembuatan gigi tiruan jembatan fixed fixed bridge dengan bahan Porcelain Fused to Metal pada kehilangan gigi 41, 31, dan 32 yang mengalami resorpsi alveolar dan rongak kecil diawali dengan penerimaan model kerja, pembuatan wax-up coping menutupi area yang mengalami resorpsi dan line angle dibuat sedikit ke arah proksimal guna memberikan kesan gigi lebih lebar secara visual, finishing pada koping logam, kemudian dilanjutkan dengan pengaplikasian slurry, opaque, dentin, enamel, translucent, dan pink ceramic pada area servikal pontik. Setelah itu dilakukan proses staining dan glazing untuk menyempurnakan warna dan kilap porselen, lalu tahap akhir berupa pemolesan pada collar hingga diperoleh hasil yang halus dan estetis. Kata kunci : fixed-fixed bridge, pink ceramic, porcelain fused to metal (PFM), resorpsi tulang alveolar, rongak kecil

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