Vol. 14 No. 1 (2024): International Dental Research

DOI: https://doi.org/10.5577/idr.2024.vol14.no1

Published: 30.04.2024

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Original Article

Evaluation of the local factors affecting periodontal bone loss using cone-beam computed tomography

Aim: This study aimed to investigate the impact of local factors, such as fillings, caries, and crowns, on periodontal bone loss across different age groups using cone beam computed tomography images. Methodology: A total of 200 CBCT images of individuals from diverse age groups (19 years and older) were examined in this study. The distance between the alveolar ridge (AR) and the cemento-enamel junction (CEJ) was assessed. Measurements up to 2 mm were considered normal, while values surpassing this threshold were regarded as indicative of bone loss. Furthermore, a comparison was made between areas affected by local factors, such as fillings, crowns, and caries, and unaffected regions in terms of the extent of bone loss. Results: The study findings revealed that the extent of bone loss was significantly lower in teeth without fillings on interproximal surfaces compared to those with fillings ( p <0.05). Conversely, no significant relationship was observed between caries on mesial surfaces and bone loss. Additionally, the study found that teeth without caries on distal surfaces exhibited significantly lower bone loss compared to decayed teeth ( p <0.05). A statistically significant difference was noted between crowned and uncrowned teeth in terms of mean bone loss values ( p <0.05). Teeth without crowns demonstrated significantly lower mean bone loss compared to those with crowns. Conclusion: Local factors, including dental restorations, caries, and crowns, have been shown to significantly impact periodontal health and to be associated with an increased susceptibility to periodontal destruction. It is essential to promptly address decayed teeth contributing to food entrapment and plaque retention, ensuring that restorations are properly placed within physiological boundaries to maintain optimal oral hygiene. How to cite this article: Sağlam G, Dağ A. Evaluation of the local factors affecting periodontal bone loss using cone-beam computed tomography. Int Dent Res 2024;14(1):1-9. https://doi.org/10.5577/intdentres.515

Alveolar bone loss, caries, dental restorations, crowns, cone-beam computed tomography

Gülnur Sağlam, Ahmet Dağ
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1-9
Abstract Views: 2900 Download: 665 10.5577/intdentres.515
Effect of aging on the fracture resistance and microleakage of CAD-CAM-produced ceramic inlays

Aim: The aim of the study was to evaluate the fracture resistance and microleakage of different CAD-CAM inlay restorations. Methodology: Inlay restorations from nine restorative materials as monolithic zirconia (TZI), resin nano ceramic (LU), hybrid ceramic (VE), feldspathic ceramic (CB), zirconia reinforced lithium silicate (VS), lithium disilicate (e.max), leucite reinforced glass ceramic (Emp), resin ceramic (GCS), and conventional composite resin (CR) were used (n=10). For evaluating the fracture resistance, restorations were cemented to resin teeth and subjected to thermomechanical aging. The data of fracture resistance were analyzed using One-way Analysis of Variance (ANOVA) and Games-Howel tests (a=0.05). For evaluating the microleakage, restorations were cemented on human teeth and subjected to thermocycling. The teeth were vertically sectioned into two parts and microleakages were assessed as yes or no. Results: The highest and lowest fracture resistance values were found in TZI and LU groups, respectively ( p >0.05). The most frequent microleakage was observed in TZI and CR groups, and the least microleakage was seen in the VE group. Microleakage was frequently found in cervical surfaces and followed by occlusal, axial, and pulpal surfaces. Conclusion: Hybrid ceramics showed similar fracture resistance with the monolithic zirconia; besides, the lowest microleakage was observed for these ceramics. Hybrid ceramics may be a good alternative for inlay restorations. How to cite this article: Bankoğlu Güngör M, İnal CB, Hürbağ M, Toksoy B, Turhan Bal B, Karakoca Nemli S. Effect of aging on the fracture resistance and microleakage of CAD-CAM-produced ceramic inlays. Int Dent Res 2024;14(1):10-18. https://doi.org/10.5577/intdentres.324

CAD-CAM, ceramic, inlays, aging, fracture resistance, microleakage

Merve Bankoğlu Güngör, Ceyda Başak İnal, Meryem Hürbağ, Burcu Toksoy, Bilge Turhan Bal, Seçil Karakoca Nemli
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10-18
Abstract Views: 1451 Download: 522 10.5577/intdentres.324
Evaluation of changes in alveolar bone remodeling after orthodontic treatment using fractal analysis: A retrospective study

Aim: The aim of this retrospective study was to analyze trabecular changes in alveolar bone remodeling after orthodontic treatment by evaluating dental panoramic radiographs using the fractal dimension (FD) analysis method. Methodology: This study included 146 individuals with dental class II malocclusion who had undergone fixed orthodontic treatment. The mean age of the patients was 14.88±2.11 years. Patients were divided into three groups: nonextraction control group (Group 1, n=45), moderate anchorage group with extraction (Group 2, n=53), and maximum anchorage group with extraction (Group 3, n=48). The region of interest in the maxillary first premolar apical area was determined using pre- and post-treatment (T0 and T1) panoramic radiographs obtained from archival records. FD analysis was conducted using ImageJ software (version 1.53, NIH). For intragroup data comparison, the paired sample t-test and Wilcoxon test were used. For intergroup data comparison, the Kruskal–Wallis and Mann–Whitney U tests were used. Statistical significance was set at p <0.05. Results: No significant difference in FD values was found between the groups at T0 ( p >0.05). At T1, compared to T0, FD values showed a significant decrease in Groups 2 and 3 (p<0.05) and no significant change in Group 1 ( p >0.05). At T1, FD values of Groups 2 and 3 were significantly lower than those for Group 1 (p<0.05); no significant difference was found within Groups 2 and 3 (p>0.05). T0/T1 FD change was significantly more in Groups 2 and 3 compared to Group 1 ( p <0.05). Conclusion: Although fixed orthodontic treatments with extraction caused significant changes in the fractal dimensions of alveolar trabecular structures when compared to nonextraction, they did not cause destructive changes. How to cite this article: Çiçek O, Yılmaz H, Melayim H. Evaluation of changes in alveolar bone remodeling after orthodontic treatment using fractal analysis: A retrospective study. Int Dent Res 2024;14(1):19-26. https://doi.org/10.5577/intdentres.517

Fractal analysis, bone remodeling, fixed orthodontic treatment, tooth extraction, trabecular structure

Orhan Çiçek, Hakan Yılmaz, Hamza Melayim
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19-26
Abstract Views: 2412 Download: 747 10.5577/intdentres.517
The effect of immediate dentin sealing on fracture resistance and failure modes of resin composite onlay restorations

Aim: This study aimed to investigate the fracture resistance, failure modes, and reparability of molars restored with laboratory-processed resin composite (Ceramage, SHOFU Inc., Kyoto, Japan) onlays above or below the cemento-enamel junction (CEJ) in the presence or absence of immediate dentin sealing (IDS). Methodology: Forty extracted sound human molars were selected and divided into four groups: 1) Below CEJ with IDS, 2) Below CEJ without IDS, 3) Above CEJ with IDS, and 4) Above CEJ without IDS. Standardized mesio-occlusal (MO) onlay preparations were made with the reduction of mesio-buccal and mesio-palatinal cusps. Butt-joint preparation was used in the proximal box area extending 1 mm below the CEJ (Groups 1 and 2) or 1 mm above the CEJ (Groups 3 and 4). In Groups 1 and 3, IDS was applied immediately after tooth preparation. After cementation (Variolink N, Ivoclar Vivadent AG, Schaan, Liechtenstein), the specimens were thermally aged (20000 cycles, 5–55 ºC) and then subjected to load to failure (1 mm/min). The failure types and reparability of the onlays were recorded, and the data were analyzed using two-way ANOVA and Fisher’s exact tests. Results: The restorations in Group 4 showed the highest mean fracture strength compared to Group 1 ( p =0.038), Group 2 ( p =0.008), and Group 3 ( p =0.019). The interaction between the level of proximal extension and the presence of IDS did not influence fracture mode or reparability ( p >0.05). Conclusion: No difference in the fracture strength of resin composite onlays below CEJ with or without IDS was found; however, not using IDS for resin composite onlays above CEJ appears to be preferable. How to cite this article: Gözetici Çil B, Köymen SS, Ünal S, Dönmez N. The effect of immediate dentin sealing on fracture resistance and failure modes of resin composite onlay restorations. Int Dent Res 2024;14(1):27-33. https://doi.org/10.5577/intdentres.510

Onlays, fracture strength, immediate dentin sealing, composite resin

Burcu Gözetici Çil, Safiye Selin Köymen, Serpil Ünal, Nazmiye Dönmez
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27-33
Abstract Views: 1586 Download: 540 10.5577/intdentres.510
Effects of seasonality, socioeconomic status, and dentist density on online searches regarding toothache: An infodemiological Google Trends analysis

How to cite this article: Aydın H. Effects of seasonality, socioeconomic status, and dentist density on online searches regarding toothache: An infodemiological Google Trends analysis. Int Dent Res 2024;14(1):34-41. https://doi.org/10.5577/intdentres.324

Google Trend analysis, infodemiology, oral health, seasonality, toothache

Hakan Aydın
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34-41
Abstract Views: 2418 Download: 564 10.5577/intdentres.513
Investigation of microhardness, surface roughness, and color change of preheated composite resins

Aim: Applying heat is a method currently used to enhance the depth of polymerization in composite resin. This study aimed to evaluate the effects of heat treatment on resin hardness, color change, and surface roughness. Methodology: In this study, 64 samples (8 mm 2 × 2 mm 2 ) were produced (3M Filtek Universal, G-aenial A’CHORD, Neo Spectra and Clearfil Majesty ES-2) using a Teflon mold (n = 8). Half of the samples were preheated to 50 o C, while the other half were polymerized at room temperature. Initial color measurements were performed using a spectrophotometer, the surface roughness was assessed with a profilometer, and the microhardness was determined using a Vickers microhardness device. Subsequently, all samples were immersed in a coffee solution at 37 o C. The color changes were documented by the seventh day. The changes in color, roughness, and hardness of the materials were examined by the thirtieth day. Results: The groups that received heat treatment exhibited higher hardness values. The unheated G-aenial A’CHORD composite resin demonstrated the most significant color change by the end of the thirtieth day, while heated and unheated Clearfil Majesty ES-2 composite samples exhibited the least color change. By the end of the thirtieth day, the surface roughness of all samples increased significantly from the baseline, with the 3M Filtek Universal samples, both heated and unheated, showing the highest surface roughness. Conclusion: According to the results of this study, heat treatment of composite resins before polymerization reduces discoloration and improves hardness. Therefore, it is recommended to heat composite resins before application. How to cite this article: Çekmez MB, Karaoğlanoğlu S, Aybala Oktay E, Aydın N, Ersöz B. Investigation of microhardness, surface roughness, and color change of preheated composite resins. Int Dent Res 2024;14(1):42-49. https://doi.org/10.5577/intdentres.523

Composite resin, microhardness, surface roughness, color change, preheating, polymerization

Malhun Begüm Çekmez, Serpil Karaoğlanoğlu, Elif Aybala Oktay, Numan Aydın, Bilge Ersöz
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42-49
Abstract Views: 2005 Download: 582 10.5577/intdentres.523

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Vol. 14 No. 1 (2024): International Dental Research

Full Issue

Original Article

Evaluation of the local factors affecting periodontal bone loss using cone-beam computed tomography

Effect of aging on the fracture resistance and microleakage of CAD-CAM-produced ceramic inlays

Evaluation of changes in alveolar bone remodeling after orthodontic treatment using fractal analysis: A retrospective study

The effect of immediate dentin sealing on fracture resistance and failure modes of resin composite onlay restorations

Effects of seasonality, socioeconomic status, and dentist density on online searches regarding toothache: An infodemiological Google Trends analysis

Investigation of microhardness, surface roughness, and color change of preheated composite resins