Tetiana Haniastuti
Bagian Biologi Mulut, Fakultas Kedokteran Gigi, Universitas Gadjah Mada, Yogyakarta, Indonesia

Published : 24 Documents
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Chemotactic Activity on Human Neutrophils to Streptococcus mutans Haniastuti, Tetiana
Journal of Dentistry Indonesia Vol 16, No 2 (2009): August
Publisher : Faculty of Dentistry, University of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2933.836 KB) | DOI: 10.14693/jdi.v16i2.99

Abstract

Objective: The aim of this study was to evaluate chemotactic activity o neutrophil to S. mutans. Chemotaxis assay was performed in blind well chambers. Materials and Methods: Hanks balanced salt solution (HBSS) containing 106 S. mutans,  108 S. mutans, 10-8 M fMLP, or HBSS alone were placed in the lower wells of the chamber and covered with polycorbonate membrane filter. Neutrophils suspension (2x105 cells) was then placed in the upper compartment. After incubation for 60 mins at 37ºC in a humidified atmosphere with 5% CO2, the filters were removed and stained with Giemsa. Result: ANOVA revealed statistically significant differences among groups (p<0.05), indicating that S. mutans induced neutrophils chemotaxis. The number of neutrophils migration in response to 108 S. mutans and 106 S. mutans were signifiantly greater compared to fMLP (p<0.05). Conclusion: S. mutans may activate human neutrophils, resulting in the chemotaxis of the neutrophils.DOI: 10.14693/jdi.v16i2.99
Infiltrasi Neutrofil pada Tikus dengan Periodontitis setelah Pemberian Ekstrak Etanolik Kulit Manggis Prasetya, Rendra Chriestedy; Purwanti, Nunuk; Haniastuti, Tetiana
Majalah Kedokteran Gigi Indonesia Vol 21, No 1 (2014)
Publisher : Majalah Kedokteran Gigi Indonesia

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

Abstract

Periodontitis adalah inflamasi kronis yang disebabkan oleh bakteri periodontopatogen. Pada periodontitis terjadi peningkatan infiltrasi neutrofil yang berfungsi untuk memfagositosis bakteri yang menginfiltrasi jaringan gingiva. Kulit manggis mempunyai bahan aktif yaitu xanton yang mempunyai efek antiinflamasi dengan jalan menghambat sintesis PGE2 sehingga akan menurunkan infiltrasi sel inflamasi. Penelitian ini bertujuan untuk mengetahui infiltrasi sel neutrofil pada periodontitis setelah pemberian ekstrak etanolik kulit manggis. Tikus wistar jantan sebanyak empat puluh delapan ekor diinduksi periodontitis dengan ligasi pada daerah subgingiva gigi anterior rahang bawah selama 7 hari. Setelah hari ke-7, ligasi dilepas selanjutnya tikus dibagi menjadi 4 kelompok perlakuan yaitu ekstrak kulit manggis 30 mg/kg BB dan 60 mg/kg BB, ibuprofen dan saline. Tikus dikorbankan pada hari ke-1, 3, 5 dan 7 setelah perlakuan. Jaringan pada bagian anterior rahang bawah ditanam dalam paraffin dan dilakukan pemotongan serial kemudian diwarnai dengan hematoxylin eosin. Jumlah neutrofil dihitung di bawah mikroskop dengan perbesaran 400x. Data jumlah neutrofil dianalisa dengan Two Way Anova. Hasil Two Way Anova menunjukkan perbedaan yang bermakna rerata sel neutrofil antar kelompok perlakuan (p<0,05) mengindikasikan pemberian ekstrak etanolik kulit manggis berpengaruh terhadap jumlah sel neutrofil. Dapat disimpulkan bahwa pemberian ekstrak etanolik kulit manggis mampu menurunkan infiltrasi sel neutrofil pada tikus yang diinduksi periodontitis. ABSTRACT: Neutrophil infiltration in rats with periodontitis after the granting of Ethanolic Extract Skin Mangosteen. Periodontitis is a chronic inflammatory disease caused by periodontopathic bacteria. When periodontitis occurs are followed by neutrophil infiltration. Mangosteen rind contains xanthone, an anti-inflammatory substance which inhibits the synthesis of PGE2 and therefore reduces inflammatory cells infiltration. This research aimed to study neutrophil cells infiltration in experimental-induced periodontitis rats after mangosteen rind ethanolic extract administration. Forty-eight male wistar rats were induced the periodontitis by putting silk ligature subgingivally around the neck of the anterior lower teeth for seven days. After the ligation had been taken out, the rats were divided into four groups and treated orally with mangosteen rind extract 60 mg/kg BB, 30 mg/kg BB, ibuprofen, and saline. The rats were sacrificed on the 1st, 3rd, 4th, seventh day after the treatment. Their anterior lower jaws were processed for paraffin embedded tissue, cut serially and stained with hematoxylin-eosin. The neutrophil cells were observed and counted under the microscope (400x). The data were analyzed using Anova. Anova result showed a significant difference among group (p<0,05) indicating that mangosteen rind ethanolic extract affected the number of neutrophils. In conclusion, mangosteen rind ethanolic extract reduced the number of neutrophil infiltration in periodontitis rats.
Odontoblast layer structure alteration as a response to carious lesions Haniastuti, Tetiana
Dental Journal (Majalah Kedokteran Gigi) Vol 44, No 3 (2011): (September 2011)
Publisher : Faculty of Dental Medicine, Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/j.djmkg.v44.i3.p164-168

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Background: Dental caries is a bacterial disease affecting the hard tissue of the teeth as well as the pulp. The human dental pulp consists of odontoblast which are organized as a densely packed cell layer. Odontoblasts is located at the periphery of the pulp; therefore, they are the first cells encountered by cariogenic bacteria and their products that are represented in the carious lesion. Purpose: This study aimed to elucidate the effect of cariogenic bacteria to odontoblasts of human teeth. Methods: Five intact third molars and 15 third molars with occlusal caries at various stages of decay were extracted because of orthodontic or therapeutic reasons. The tooth specimens were fixed, decalcified with 10% EDTA solution (pH 7.4), and embedded in paraffin. Serial sections of 5 μm thickness were cut and stained with haematoxylin eosin and Gram’s, in addition to nestin immunohistochemistry. The specimens were then examined under light microscopy. Results: In normal teeth, odontoblast layer were aligned along the pulp chamber showing normal morphology of the cells. Slight disorganization of odontoblast layer was seen in the cases of carious lesions confined to enamel. In the cases of carious lesions confined to dentin, odontoblast layer was not observed in the areas subjacent to the lesions, only single cells showing flattened cell morphology were found. Odontoblasts beneath the lesion suffered severe damage and diminished nestin immunoreaction were observed in all cases of carious lesions with pulp exposure. Conclusion: Cariogenic bacteria invasion may damage the odontoblasts by affecting the morphology and vitality of the cells. The severity of the damage of the odontoblasts may increase as the bacterial invasion progresses toward the pulp.Latar belakang: Karies merupakan penyakit yang disebabkan oleh bakteri, yang dapat memengaruhi jaringan keras gigi maupun pulpa. Pada pulpa gigi manusia terdapat sel odontoblas yang tersusun atas lapisan sel. Odontoblas terletak pada tepi kamar pulpa, sehingga sel ini merupakan sel yang pertama kali bertemu dengan bakteri kariogenik dan produk-produknya yang terdapat dalam lesi karies. Tujuan: Penelitian ini bertujuan untuk mengetahui pengaruh invasi bakteri kariogenik terhadap sel odontoblas gigi manusia. Metode: Lima buah gigi molar ketiga utuh dan 15 gigi molar ketiga yang mengalami karies pada permukaan oklusal dengan berbagai tingkat keparahan diekstraksi karena akan menjalani perawatan ortodontik atau perawatan lainnya. Gigi-geligi tersebut kemudian difiksasi, didekalsifikasi dengan larutan EDTA 10% (pH 7,4), dan ditanam dalam parafin. Spesimen gigi tersebut kemudian dipotong dengan ketebalan 5 μm dan diwarnai dengan hematoksilin eosin dan Gram, serta immunohistokimia dengan nestin. Spesimen kemudian diamati di bawah mikroskop cahaya. Hasil: Pada gigi normal, lapisan odontoblas terdapat di sepanjang tepi kamar pulpa dengan morfologi sel normal. Disorganisasi ringan pada lapisan odontoblas tampak pada kasus-kasus karies dengan kedalaman enamel. Pada kasus-kasus lesi karies dengan kedalaman dentin, lapisan odontoblas tidak tampak pada daerah di bawah lesi, hanya ditemukan sel odontoblas tunggal dengan dengan morfologi sel yang pipih. Odontoblas di bawah lesi mengalami kerusakan yang parah dan tidak menunjukkan nestin immunopositif merupakan gambaran dari kasus-kasus karies dengan pulpa terbuka. Kesimpulan: Invasi bakteri kariogenik dapat menyebabkan kerusakan sel odontoblas dengan menyebabkan perubahan morfologi dan memengaruhi vitalitas selnya. Kerusakan sel akan semakin parah dengan semakin dalam invasi bakteri ke arah pulpa.
Ekspresi COX-2 setelah pemberian ekstrak etanolik kulit manggis (Garcinia mangostana Linn) pada tikus wistar (COX-2 expression after mangosteen rind (Garcinia mangostana Linn) etanolic extract administration in wistar rats) Prasetya, Rendra Chriestedy; Haniastuti, Tetiana; Purwanti, Nunuk
Dental Journal (Majalah Kedokteran Gigi) Vol 46, No 4 (2013): (December 2013)
Publisher : Faculty of Dental Medicine, Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/j.djmkg.v46.i4.p173-178

Abstract

Background: Cyclooxygenase is an enzyme for prostaglandins (PGs) synthesis from arachidonic acid. Cyclooxygenase have been characterized and named as COX-1 and COX-2. COX-1 is responsible for constitutive PGs production under physiological condition and maintains normal function. On the other hand, while COX-2 expression is inducible by cytokines and endotoxin. Periodontitis is a chronic inflammatory disease caused by anaerobic bacteria especially gram negative bacteria. The periodontitis occurrence is followed by increased of COX-2 expression. Mangosteen rind (Garcinia mangostana Linn) contains gamma mangostin which inhibits the synthesis of PGE2 through inhibition of COX-2 expression. Purpose: This research was aimed to study COX-2 expression in experimental-induced periodontitis in wistar rats after mangosteen rind etanolic extract administration. Methods: Forty eight male wistar rats were induced periodontitis by putting silk ligature subgingivally around the cervical of the anterior lower teeth for 7 days. After the ligation was taken out, the rats were divided into 4 groups, and treated orally with mangosteen rind extract 60 mg/kg BB, 30 mg/kg BB, ibuprofen and saline respectively. The rats were sacrificed on the 1st, 3rd, 4th, 7th day after the treatment. The rats’ anterior lower jaws were processed for paraffin embedded tissue, cut serially and stained with immunohistochemistry. COX-2 expression were observed and counted under the microscope (400x). The data were analyzed using kruskall wallis test. Results: Kruskal wallis test showed a significant difference COX-2 expression among group indicating that mangosteen rind etanolic extract affected COX-2 expression. Conclusion: Mangosteen rind etanolic extract reduced COX-2 expression in periodontitis rats.Latar belakang: Siklooksigenase adalah enzim yang mensintesis prostaglandin (PG) dari asam arakhidonat. Siklooksigenase dibagi menjadi 2 yaitu COX-1 dan COX-2. COX-1 bertanggung jawab pada sintesis PG dalam kondisi fisiologis dan mempertahankan fungsi normal, sedangkan ekspresi COX-2 dapat terinduksi oleh sitokin dan endotoksin. Periodontitis adalah penyakit peradangan kronis yang disebabkan oleh bakteri anaerob terutama bakteri gram negatif. Terjadinya periodontitis diikuti oleh peningkatan ekspresi COX-2. Kulit buah manggis (Garcinia mangostana Linn) mengandung mangostin gamma yang menghambat sintesis PGE2 melalui penghambatan COX-2. Tujuan: Penelitian ini bertujuan untuk meneliti ekspresi COX-2 pada tikus wistar jantan yang diinduksi periodontitis setelah pemberian ekstrak etanolik kulit manggis. Metode: Empat puluh delapan ekor tikus wistar jantan diinduksi periodontitis dengan meletakkan ligatur sutra pada subgingiva sevikal gigi anterior rahang bawah selama 7 hari. Setelah ligatur dilepas, tikus dibagi dalam 4 kelompok yaitu ekstrak kulit manggis dosis 60 mg/kg BB, 30 mg/kg BB, ibuprofen dan saline dengan pemberian secara peroral. Tikus didekapitasi pada hari ke-1,3, 5 dan 7 setelah perlakuan. Rahang bawah gigi depan dilakukan pemrosesan menjadi blok paraffin, dipotong serial dan dilakukan pewarnaan imunohistokimia. Ekspresi COX-2 diamati di bawah mikroskop dengan perbesaran 400x. Data pengamatan dianalisa dengan uji kruskall wallis. Hasil: Uji kruskall wallis menunjukkan terdapat perbedaan bermakna ekspresi COX-2 diantara kelompok perlakuan yang mengindikasikan bahwa ekstrak kulit manggis mempengaruhi ekspresi COX-2. Simpulan: Ektrak etanolik kulit manggis menurunkan ekspresi COX-2 pada tikus dengan periodontitis.
Pulpal inflammation after vital tooth bleaching with 38% hydrogen peroxide Andriani, Ardiny; Handajani, Juni; Haniastuti, Tetiana
Dental Journal (Majalah Kedokteran Gigi) Vol 45, No 2 (2012): (June 2012)
Publisher : Faculty of Dental Medicine, Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/j.djmkg.v45.i2.p89-92

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Background: In-office vital tooth bleaching is a treatment to remove tooth stains. Tooth sensitivity is one of side effect commonly complained by patients receiving this treatment. Purpose: The aim of this study was to examine histological inflammatory cells infiltration of dental pulp after application of 38% H2O2 as a vital tooth bleaching agent. Methods: Under informed consent, a total of 15 premolars from 8 healthy subjects scheduled for orthodontic extraction were used in this study. Thirty eight percent H2O2 was applied on the buccal surface of the treated group. The treated teeth were extracted after 1 hour, 5, 8, and 15 days. All specimens were embedded in paraffin wax, sectioned serially and stained with Hematoxyllin Eosin. Histological specimens were then observed under a light microscope. Results: All treated groups showed a slight disorganization of odontoblasts layer and slight inflammation in the pulp tissue adjacent to the 38% H2O2 application site. The number of polymorphonuclear leukocytes (PMN) had increased significantly 1 hour after application of 38% H2O2 (p<0.05), while macrophages had significantly increased 5 days after the application (p<0.05). The most intense PMN and macrophages infiltration was found 5 days after the application and gradually decreased 8 days after application of38% H2O2. Conclusion: Application of 38% H2O2 as a vital tooth bleaching agent induces acute inflammation in human dental pulp; however, the inflammation will decrease 8 days after the application.Latar belakang: Perawatan pemutihan gigi vital metode in-office merupakan tindakan untuk menghilangkan pewarnaan pada gigi. Salah satu efek samping yang sering dikeluhkan oleh pasien yang menjalani perawatan ini adalah sensitivitas gigi. Tujuan: Penelitian ini bertujuan untuk mengamati infiltrasi sel inflamasi pada pulpa gigi setelah aplikasi H2O2 38% sebagai bahan pemutih gigi. Metode: Sampel penelitian ini berupa 15 gigi premolar yang berasal dari 8 subjek sehat yang akan melakukan pencabutan gigi untuk perawatan ortodontik. Seluruh subjek telah menandatangani informed consent. Hidrogen peroksida 38% diaplikasikan pada permukaan bukal gigi kelompok perlakuan. Gigi kemudian dicabut 1 jam, 5, 8, dan 15 hari setelah aplikasi H2O2 38%. Seluruh spesimen kemudian ditanam dalam parafin, dipotong secara serial dan diwarnai dengan Hematoxillin Eosin. Pengamatan preparat histologis dilakukan dengan menggunakan mikroskop cahaya. Hasil: Hasil penelitian ini menunjukkan gangguan pada lapisan odontoblas dan peradangan pada jaringan pulpa di bawah daerah aplikasi H2O2. Jumlah PMN meningkat secara signifikan (p<0,05) 1 jam setelah aplikasi H2O2 38% sedangkan jumlah makrofag meningkat secara signifikan 5 hari setelah aplikasi hidrogen peroksida 38%. Infiltrasi PMN dan makrofag paling banyak ditemukan 5 hari setelah aplikasi dan menurun secara bertahap 5 dan 8 hari setelah aplikasi H2O2 38%. Kesimpulan: Aplikasi H2O2 38% sebagai bahan pemutih gigi vital dapat menginduksi inflamasi akut pada pulpa gigi manusia, namun, inflamasi akan mereda 8 hari setelah aplikasi.
The role of transforming growth factor beta in tertiary dentinogenesis Haniastuti, Tetiana; Nunez, Phides; Djais, Ariadna A.
Dental Journal (Majalah Kedokteran Gigi) Vol 41, No 1 (2008): (March 2008)
Publisher : Faculty of Dental Medicine, Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/j.djmkg.v41.i1.p15-20

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The most visible repair response to pulp injury is the deposition of a tertiary dentin matrix over the dentinal tubules of the primary or secondary dentin. Tertiary dentin is distinguished as reactionary and reparative dentin, depending on the severity of the initiating response and the conditions under which the newly deposited dentin matrix was elaborated. Transforming growth factor beta (TGF-b) superfamily is a large group of growth factors that serve important roles in regulating cell growth, differentiation, and function. Members of this superfamily have been implicated in the repair process of the dental tissue after injury. Although numerous studies have proved that those bioactive molecules carry out an important role in the formation of tertiary dentin, comprehensive report regarding that phenomenon is not yet available. This review article aimed to summarize the role of TGF-b on tertiary dentinogenesis during the progression of a carious lesion.
Respon inflamasi pulpa gigi tikus Sprague Dawley setelah aplikasi bahan etsa ethylene diamine tetraacetic acid 19% dan asam fosfat 37% Fatimatuzzahro, Nadie; Haniastuti, Tetiana; Handajani, Juni
Dental Journal (Majalah Kedokteran Gigi) Vol 46, No 4 (2013): (December 2013)
Publisher : Faculty of Dental Medicine, Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/j.djmkg.v46.i4.p190-195

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Background: Etching agents such as ethylene diamine tetraacetic acid (EDTA) and phosphoric acid which are widely used in adhesive restoration system, are aimed to increase retention of restorative materials; however, these agents may induce inflammation of dental pulp. The major function of the inflammatory response is to remove invading pathogens or damaged tissue/ cells and therefore, initiate repair. Neutrophils and macrophages are motile phagocytes that constitute the bodys first line of defense. Purpose: The purpose of the present research was to study the effect of 19% EDTA and 37% phosphoric acid for etching application agents on the inflammatory response of the dental pulp. Methods: Forty-five male Sprague Dawley rats were divided into 3 groups. Cavity preparation was made on the occlusal surface of maxillary first molar using a round diamond bur. Nineteen percent of EDTA, 37% phosphoric acid, and distilled water were applied on the surface of the cavity of the teeth in group I, II and III respectively. The rats were sacrified at 1, 3, 5, 7, and 14 days after the application (n=3 for each day). The specimens were then processed histologically and stained with hematoxylin eosin. Results: ANOVA showed a significant difference (p<0.05) among treatment groups, indicating that etching agents application induced neutrophils, macrophages and lymphocytes infiltration in the dental pulp. Tuckey HSD test showed that application of 37% phosphoric acid increased higher number of neutrophils, macrophages and lymphocytes significantly than 19% EDTA (p<0.05). Conclusion: The study suggested that 37% phosphoric acid induced higher number of the inflammatory cells than 19% EDTA.Latar belakang: Penggunaan bahan etsa seperti ethylene diamine tetraacetic acid (EDTA) dan asam fosfat pada sistem restorasi adhesif bertujuan untuk meningkatkan retensi bagi bahan restorasi, namun penggunaan bahan-bahan tersebut dapat menginduksi inflamasi pada pulpa. Respon inflamasi berfungsi untuk menghilangkan patogen, sel-sel atau jaringan yang rusak dan menginisiasi perbaikan. Netrofil dan makrofag adalah sel fagosit yang merupakan garis pertama pertahanan tubuh. Tujuan: Penelitian ini bertujuan untuk meneliti efek EDTA 19% dan asam fosfat 37% sebagai bahan etsa terhadap respon inflamasi pada pulpa gigi. Metode: Empat puluh lima ekor tikus Sprague Dawley jantan dibagi menjadi 3 kelompok. Permukaan oklusal gigi molar satu rahang atas dipreparasi menggunakan diamond round bur. Pada kelompok I kavitas diaplikasikan EDTA 19%, kelompok II diaplikasikan asam fosfat 37% dan kelompok III diaplikasikan akuades. Hewan coba dikorbankan pada hari ke-1, 3, 5, 7 dan 14 setelah aplikasi bahan etsa (n=3). Spesimen diproses secara histologis dan dicat dengan hematoksilin eosin. Hasil: Hasil ANOVA menunjukkan perbedaan yang bermakna (p<0,05) antar kelompok perlakuan, mengindikasikan bahwa aplikasi bahan etsa menyebabkan infiltrasi sel inflamasi pada pulpa, baik netrofil, makrofag dan limfosit. Hasil uji Tuckey HSD menunjukkan bahwa asam fosfat 37% menstimulasi infiltrasi sel netrofil, makrofag dan limfosit signifikan (p<0,05) lebih banyak dibanding EDTA 19%. Simpulan: Penelitian ini menunjukkan bahwa asam fosfat 37% menyebabkan infiltrasi sel inflamasi yang lebih banyak dibanding EDTA 19%.
Pulp nerve fibers distribution of human carious teeth: An immunohistochemical study Haniastuti, Tetiana
Dental Journal (Majalah Kedokteran Gigi) Vol 43, No 4 (2010): (December 2010)
Publisher : Faculty of Dental Medicine, Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/j.djmkg.v43.i4.p186-189

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Background: Human dental pulp is richly innervated by trigeminal afferent axons that subserve nociceptive function. Accordingly, they respond to stimuli that induce injury to the pulp tissue. An injury to the nerve terminals and other tissue components in the pulp stimulate metabolic activation of the neurons in the trigeminal ganglion which result in morphological changes in the peripheral nerve terminals. Purpose: The aim of the study was to observe caries-related changes in the distribution of human pulpal nerve. Methods: Under informed consents, 15 third molars with caries at various stages of decay and 5 intact third molars were extracted because of orthodontic or therapeutic reasons. All samples were observed by micro-computed tomography to confirm the lesion condition 3-dimensionally, before decalcifying with 10% EDTA solution (pH 7.4). The specimens were then processed for immunohistochemistry using anti-protein gene products (PGP) 9.5, a specific marker for the nerve fiber. Results: In normal intact teeth, PGP 9.5 immunoreactive nerve fibers were seen concentrated beneath the odontoblast cell layer. Nerve fibers exhibited an increased density along the pulp-dentin border corresponding to the carious lesions. Conclusion: Neural density increases throughout the pulp chamber with the progression of caries. The activity and pathogenicity of the lesion as well as caries depth, might influence the degree of neural sprouting.Latar belakang: Pulpa gigi manusia diinervasi oleh serabut saraf trigeminal yang berespon terhadap stimuli penyebab perlukaan dengan menimbulkan rasa sakit. Perlukaan pada akhiran saraf dan komponen lain dari pulpa akan menstimulasi aktivasi metabolik dari neuron pada ganglion trigeminal sehingga mengakibatkan perubahan morfologi pada akhiran saraf perifer. Tujuan: Penelitian ini bertujuan untuk mengamati perubahan distribusi saraf pada pulpa gigi manusia yang disebabkan oleh proses karies. Metode: Penelitian ini menggunakan 15 buah gigi molar tiga yang mengalami karies dengan berbagai tingkat kedalaman karies dan 5 buah gigi molar tiga normal (tidak mengalami karies). Gigi-geligi tersebut dicabut untuk keperluan perawatan ortodontik atau alasan perawatan lainnya. Sebelum didekalsifikasi dengan menggunakan EDTA 10% (pH 7,4), seluruh sampel diamati dengan micro-computed tomography untuk mengetahui kondisi lesi secara tiga dimensi. Spesimen kemudian diproses secara immunohistokimia menggunakan anti-protein gene products (PGP) 9,5 yang merupakan penanda spesifik untuk serabut saraf. Hasil: Pada pulpa gigi normal, serabut saraf yang menunjukkan ekspresi PGP 9,5 positif tampak terkonsentrasi di bawah lapisan odontoblast. Distribusi serabut saraf tampak meningkat pada perbatasan dentin-pulpa di bawah lesi karies. Kesimpulan: Densitas serabut saraf pada kamar pulpa meningkat dengan bertambahnya kedalaman karies. Aktivitas dan patogenisitas dari lesi serta kedalaman karies dapat berpengaruh terhadap penyebaran serabut saraf.
Potential role of odontoblasts in the innate immune response of the dental pulp Haniastuti, Tetiana
Dental Journal (Majalah Kedokteran Gigi) Vol 41, No 3 (2008): (September 2008)
Publisher : Faculty of Dental Medicine, Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/j.djmkg.v41.i3.p142-146

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Background: Odontoblasts are the cells lining of tooth’s hard structure at the dentin-pulp border, which become the first cells encountered oral microorganisms entering dentin. However, they do not only form a physical barrier by producing dentin, but also provide an innate immune barrier for the tooth. Purpose: The aim of this review was to discuss the potential role of odontoblasts in the innate immune response of the dental pulp. Reviews: Recent studies have proven that odontoblasts express toll-like receptors, and capable of producing chemokines (i.e. IL-8, CCL2, CXCL2, and CXCL10), and cytokines (IL-1β and TNF-α) following lipopolysacharide exposure. Thereby odontoblasts are actively participating in the recruitment of immune cells in response to caries–derived bacterial products. Furthermore, odontoblasts also produce antimicrobial peptides (hBD-1, hBD-2, and hBD-3), and transform growth factor β that induce antimicrobial and anti-inflammatory activities. Conclusion: The presence of those innate immune molecules indicates that the nonspecific, natural, and rapidly acting defense may also be an important function of odontoblasts.
Distribution of class ii major histocompatibility complex antigenexpressing cells in human dental pulp with carious lesions Haniastuti, Tetiana
Dental Journal (Majalah Kedokteran Gigi) Vol 45, No 3 (2012): (September 2012)
Publisher : Faculty of Dental Medicine, Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/j.djmkg.v45.i3.p133-137

Abstract

Background: Dental caries is a bacterial infection which causes destruction of the hard tissues of the tooth. Exposure of the dentin to the oral environment as a result of caries inevitably results in a cellular response in the pulp. The major histocompatibility complex (MHC) is a group of genes that code for cell-surface histocompatibility antigens. Cells expressing class II MHC molecules participate in the initial recognition and the processing of antigenic substances to serve as antigen-presenting cells. Purpose: The aim of the study was to elucidate the alteration in the distribution of class II MHC antigen-expressing cells in human dental pulp as carious lesions progressed toward the pulp. Methods: Fifteen third molars with caries at the occlusal site at various stages of decay and 5 intact third molars were extracted and used in this study. Before decalcifying with 10% EDTA solution (pH 7.4), all the samples were observed by micro-computed tomography to confirm the lesion condition three-dimensionally. The specimens were then processed for cryosection and immunohistochemistry using an anti-MHC class II monoclonal antibody. Results: Class II MHC antigen-expressing cells were found both in normal and carious specimens. In normal tooth, the class II MHC-immunopositive cells were observed mainly at the periphery of the pulp tissue. In teeth with caries, class II MHC-immunopositive cells were located predominantly subjacent to the carious lesions. As the caries progressed, the number of class II MHC antigen-expressing cells was increased. Conclusion: The depth of carious lesions affects the distribution of class II MHC antigen-expressing cells in the dental pulp.Latar belakang: Karies merupakan penyakit infeksi bakteri yang mengakibatkan destruksi jaringan keras gigi. Dentin yang terbuka akibat karies akan menginduksi respon imun seluler pada pulpa. Kompleks histokompatibilitas utama (MHC) merupakan sekumpulan gen yang mengkode histokompatibilitas antigen-antigen permukaan sel. Sel-sel yang mengekspresikan molekul-molekul ini berpartisipasi dalam pengenalan awal substansi-substansi antigenik untuk selanjutnya diproses dan dipresentasikan pada permukaan sel. Tujuan: Penelitian ini bertujuan untuk mengetahui perubahan distribusi sel-sel yang mengekspresikan molekul MHC kelas II pada pulpa gigi manusia dengan meningkatnya keparahan karies. Metode: Penelitian ini menggunakan 15 gigi molar ketiga yang mengalami karies pada permukaan oklusal dengan berbagai tingkat kedalaman dan 5 gigi molar ketiga normal (tidak mengalami karies). Sebelum didekalsifikasi dengan larutan EDTA 10% (pH 7,4), seluruh sampel diamati dengan menggunakan micro-computed tomography untuk mengetahui kedalaman lesi karies secara tiga dimensi. Spesimen kemudian diproses untuk dilakukan cryosection dan dilakukan immunohistokimia dengan menggunakan monoklonal antibodi anti MHC kelas II. Hasil: Ekspresi MHC kelas II oleh sel-sel pada ruang pulpa dijumpai disemua spesimen baik pada kondisi normal maupun karies. Pada gigi normal, sel-sel yang mengekspresikan MHC kelas II terletak terutama pada tepi pulpa. Pada gigi-geligi yang mengalami karies, agregasi sel-sel yang mengekspresikan MHC kelas II terutama terletak di bawah lesi karies. Semakin dalam lesi karies, jumlah sel-sel yang mengekspresikan MHC kelas II semakin meningkat. Kesimpulan: Kedalaman lesi karies berpengaruh terhadap distribusi sel-sel yang mengekspresikan MHC kelas II pada pulpa.