Claim Missing Document
Check
Articles

Found 3 Documents
Search

The effect of preheating on the color stability of microhybrid composite resin after immersion in carbonated beverages and black tea: an experimental study Nugroho, Raditya; Penga, Yohana Maria; Al Ghifari, Faiq Aqil; Wulandari, Erawati; Hidayati, Lusi
Padjadjaran Journal of Dentistry Vol 36, No 3 (2024): November 2024
Publisher : Faculty of Dentistry Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjd.vol36no3.58667

Abstract

Introduction: Composite resin is commonly used in restorative dentistry due to its pleasing aesthetics. However, this material tends to experience discoloration, a vital standard reflecting the restoration’s success. Studies show that preheating is effective in maintaining the color stability of other types of composite resin; nevertheless, the effect on microhybrid composite resin is not fully understood. This study aimed to analyze the effect of preheating on the color stability of microhybrid composite resins after immersion in carbonated beverages and black tea. Method: Twenty-four Z250 shade A2 composite resin discs, each with a diameter of 7 mm and a thickness of 2 mm, were divided into four groups (n=6). While groups I and II underwent a preheating process at 68°C before being soaked in carbonated drinks and black tea, groups III and IV were prepared at room temperature (25°C) without preheating and soaked in carbonated drinks and black tea. The discoloration of the samples was determined utilizing a UV-Vis spectrophotometer according to CIEL*a*b* color space. Data were analyzed using one-way ANOVA followed by the Least Significant Difference (LSD) test. Result: Preheating increased the color stability of composite resins. Preheated composite resins experienced significantly lower discoloration than composite resins at room temperature after soaking in carbonated drinks and black tea (p<0.05). Conclusion: preheating can minimize the color change of microhybrid composite resin after immersion in carbonated beverages and black tea. 
Comparison of the potential of green okra (Abelmoschus esculentus) extract and a combination of 17% EDTA and 2.5% NaOCl in removing the smear layer from dental root canal walls: experimental laboratory Nissa, Rahma Aulia; Nugroho, Raditya; Fatmawati, Dwi Warna Aju
Jurnal Kedokteran Gigi Universitas Padjadjaran Vol 36, No 2 (2024): Agustus 2024
Publisher : Fakultas Kedokteran Gigi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/jkg.v36i2.56053

Abstract

Introduction: The smear layer is a thin film of organic and inorganic substances that can inhibit intracanal medication penetration, necessitating removal with root canal irrigants. Commonly used irrigants include a combination of 17% EDTA and 2.5% NaOCl, but EDTA is ineffective against organic components, while NaOCl may cause periapical pain and instrument corrosion. Green okra extract contains active antibacterial compounds, showing potential as an alternative. This research aimed to compare the potential of green okra extract with that of 17% EDTA and 2,5% NaOCl in smear layer removal. Methods: This research is a laboratory experiment with a posttest only control group design. The treatment groups consisted of 12.5% green okra extract and a combination of 17% EDTA and 2,5% NaOCl root canal irrigation agents. Ten mandibular premolars were sectioned at the cemento-enamel junction then prepared using step-back technique. Five samples were irrigated with 0,1 ml of 12.5% green okra extract, while the other five received 0,1 ml 17% EDTA and 2.5% NaOCl. The cleanliness of the root canal walls was evaluated using a Scanning Electron Microscope (SEM) at 5000x magnification, and data were analyzed using the Mann-Whitney U test. Result: Both groups exhibited similar levels of root canal cleanliness (p=0.093), with a cleanliness score of 2, indicating mostly open dentin tubule orifices and minimal smear layer. Conclusion: Green okra extract (12.5) demonstrated comparable potential to a combination of 17% EDTA and 2.5% NaOCl in removing the smear layer from root canal walls.Perbandingan potensi ekstrak okra hijau (Abelmoscus esculentus) dengan kombinasi EDTA 17% dan NaOCl 2,5% dalam membersihkan smear layer dinding saluran akar gigi: eksperimental laboratorisPendahuluan: Smear layer adalah lapisan tipis yang berisi substansi organik dan anorganik. Smear layer dapat menghambat penetrasi medikamen intrakanal ke dalam tubulus dentin sehingga harus dibersihkan dengan bahan irigasi saluran akar. Bahan irigasi saluran akar yang biasa digunakan adalah kombinasi EDTA 17% dan NaOCl 2,5%. Namun, EDTA 17% tidak dapat membersihkan substansi organik dari smear layer, sedangkan NaOCl 2,5% dapat menimbulkan nyeri pada jaringan periapikal serta menimbulkan korosi instrumen endodontik. Ekstrak okra hijau mengandung senyawa antibakteri aktif, sehingga berpotensi sebagai alternatif bahan irigasi. Penelitian ini bertujuan untuk menganalisis perbandingan potensi ekstrak okra hijau dengan kombinasi EDTA 17% dan NaOCl 2,5% dalam membersihkan smear layer dinding saluran akar gigi. Metode: Jenis penelitian eksperimental laboratoris dengan rancangan posttest only control group design. Kelompok perlakuan konsentrasi ekstrak okra hijau 12,5% dan kombinasi EDTA 17% dan NaOCl 2,5%. Sepuluh premolar mandibula dipotong di cemento-enamel junction kemudian dipreparasi menggunakan teknik step back. Lima sampel di irigasi dengan ekstrak okra hijau 12,5% sebanyak 0,1 ml dan lima sampel di irigasi dengan EDTA 17% sebanyak 0,1 ml 17% dan NaOCl 2,5% sebanyak 0,1. Sepuluh sampel dinilai skor kebersihan dinding saluran akarnya menggunakan Scanning Electron Microscope (SEM) dengan perbesaran 5000x dan dilakukan uji beda menggunakan Mann Whitney U test. Hasil: Kebersihan dinding saluran akar pada dua kelompok sampel memiliki tingkat kebersihan yang sama. Analisis data menggunakan Mann Whitney U test. diperoleh nilai p=0,093 yang berarti bahwa tidak ada perbedaan yang signifikan antara dua kelompok. Kedua kelompok memiliki skor 2, artinya sebagian besar orifis tubuli dentin terbuka dan terdapat sedikit smear layer. Simpulan: Ekstrak okra hijau 12,5% mempunyai potensi yang sama dengan kombinasi larutan EDTA 17% dan irigasi NaOCl 2,5% dalam membersihkan smear layer dinding saluran akar.
Potensi ekstrak buah okra hijau (Abelmoscus esculentus) dalam membersihkan smear layer pada kavitas dentin mahkota: penelitian eksperimental laboratoris Ismanto, Berliana Inas Nabila Putri; Aju Fatmawati, Dwi Warna; Nugroho, Raditya; Lestari, Sri
Jurnal Kedokteran Gigi Universitas Padjadjaran Vol 37, No 1 (2025): April 2025
Publisher : Fakultas Kedokteran Gigi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/jkg.v37i1.58588

Abstract

Pendahuluan:Smear layer merupakan suatu lapisan yang terbentuk dari sisa-sisa debris pasca instrumentasi yang tersusun dari komponen organik dan anorganik. Smear layer yang tidak dibersihkan dapat mengganggu pelekatan suatu bahan restorasi ke dalam dinding kavitas serta dapat menjadi host bagi mikroorganisme.. Salah satu bahan dentin conditioner yang biasa digunakan adalah asam  poliakrilat 10%. Bahan alami yang dapat digunakan sebagai alternatif dentin conditioner untuk meminimalisir efek samping bahan kimia adalah ekstrak buah okra hijau karena memiliki kandungan yang bersifat asam dan mengandung senyawa saponin yang bersifat sebagai surfaktan alami. Penelitian ini bertujuan untuk mengetahui kemampuan ekstrak buah okra hijau dalam membersihkan smear layer pada permukaan kavitas dan membandingkan kemampuan ekstrak buah okra hijau dengan asam poliakrilat 10% dalam membersihkan smear layer. Metode: Penelitian yang dilakukan merupakan jenis penelitian eksperimental laboratoris untuk mengetahui kemampuan ekstrak buah okra hijau 12,5% dalam membersihkan smear layer dibandingkan dengan asam poliakrilat 10%. 10 elemen gigi dilakukan preparasi kavitas kelas I pada 1/3 tengah permukaan bukal hingga terbentuk kavitas dengan diameter 3 mm dan kedalaman 2 mm. Lima sampel diaplikasikan dengan asam poliakrilat 10% dan lima sampel diaplikasikan dengan ekstrak buah okra hijau 12,5%  sebanyak 6 µL, dibiarkan selama 20 detik, diirigasi kembali dengan aquades 0,5 ml, dan dikeringkan dengan cotton pellet. Setiap sampel dilakukan pemotretan dengan SEM perbesaran 5000x. Hasil pemotretan dilakukan penilaian oleh 3 orang pengamat sesuai skor yang ada. Hasil: Hasil penelitian menunjukkan bahwa kebersihan permukaan kavitas pada kedua kelompok sampel memiliki nilai modus yang sama yaitu 2 (sebagian orifis tubuli dentin terbuka dan terdapat sedikit smear layer). Simpulan: Ekstrak buah okra hijau 12,5% mempunyai kemampuan membersihkan smear layer pada dentin mahkota setara dengan asam poliakrilat 10%.The potential of green okra fruit extract (Abelmoscus esculentus) for cleaning the smear layer on crown dentin cavity: experimental laboratory studyIntroduction: Smear layer is a thin layer formed by post-instrumentation of tooth structure. Smear layers can inhibit dental material bonding to the cavity and can affect as a host for microorganisms. Partial smear layer should be removed using dentin conditioner. One of the commonly used dentin conditioners is 10% polyacrylic acid. The natural ingredient could be used as an alternative dentin conditioner to minimize the side effects of the chemical material above is 12.5% green okra extract because it contains acid and saponin which act as natural surfactants. The aim of the research was to determine the ability of green okra fruit extract to clean the smear layer on cavity surfaces compared to 10% polyacrylic acid. Methods: The research was a laboratory experimental study to determine the ability of 12.5% green okra extract to remove the crown dentin smear layer compared to 10% polyacrylic acid. Ten dental elements were prepared for class I cavity on the middle 1/3 of the buccal surface until reaching a cavity with a diameter of 3 mm and a depth of 2 mm was formed. Five samples were applied with 10% polyacrylic acid and 5 samples were applied with 12.5% green okra fruit extract, 6 µL each group, left for 20 seconds then irrigated with 0.5 ml aquadest and dried with cotton pellet. The samples were examined for their cavity cleanliness score using Scanning electron microscope (SEM) photo with 5000x of magnification. The image results were assessed by 3 observers according to the existing scores. Results: The results showed that the cleanliness of the cavity surface in both sample groups had the same level of cleanliness, score 2 (some of the dentin tubule orifices are open and there is a small smear layer). Both groups have the same score and statistical tests show that there is no significant difference between them. Conclusion: 12.5% green okra fruit extract has the ability to clean the smear layer on crown dentin equal to 10% polyacrylic acid.