Vol. 14 No. 2 (2024): International Dental Research

DOI: https://doi.org/10.5577/idr.2024.vol14.no2

Published: 31.08.2024

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Original Article

One-year clinical evaluation of bone-level and tissue-level implants

Aim: This study aimed to retrospectively examine and compare the clinical conditions of different implant levels at the end of 1 year. The clinical success is closely related to the loading time, the primary stability, oral hygiene, the features of the implant neck, and the bone structure. Methodology: A total of 41 implants were applied to patients with a mean age of 52.76±11.39 years. Among these patients, 10 (47.6%) were female, and 11 (52.4%) were male. Out of the total of 19 implants, 46.3% were placed in the left mandible. Specifically, 14.6% were placed in the premolar area and 31.7% were placed in the molar region. The 22 (53.7%) remaining cases were placed in the right mandible, with 10 (24.4%) in the premolar region and 12 (29.3%) in the molar region. In all, 21 implants (51.2%) were placed at the bone level, whereas 20 implants (48.8%) were placed at the tissue level. Out of the total of 41 implants, 25 (61%) had a diameter of 3.3 mm, whereas 16 (39%) had a diameter of 4.1 mm. X-rays were taken to detect bone loss in the mesial and distal regions, transferred to the computer, and evaluated via IBM SPSS Statistics V22 software. Results: In the study, 19 (46.3%) of the implants were placed in the left mandible and 22 (53.7%) in the right mandible. Approximately 51.2% of the implants were placed at the bone level, and 48.8% were at the tissue level. Initial Osstell values ranged from 72.88 ± 6.4 ISQ to 75.83 ± 5.92 ISQ. The initial X-ray results varied between 0.03 ± 0.09 mm and 0.38 ± 0.99 mm, whereas the final X-ray measurements were 0.15 ± 0.24 mm to 0.71 ± 1.54 mm. Conclusion: Bone loss was determined to be less than 2 mm in both groups. Plaque accumulation occurred in the lingual region; however, it was observed more at the bone level. Hygiene control is the key for success, which could easily be accomplished with the gingival level of implants or the gingival positioning height of the abutments. How to cite this article: Sözkes S, Kayabay G, Koçak Büyükdere A. One-year clinical evaluation of bone-level and tissue-level implants. Int Dent Res 2024;14(2):50-56. https://doi.org/10.5577/idr2024.392

Bone-level implant, tissue-level implant, implant survival rate, mandible, tooth loss

Sarkis Sözkes, Gökçe Kayabay, Ayse Koçak Büyükdere
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50-56
Abstract Views: 1954 Download: 722 10.5577/idr2024.392
Effects of different surface finishing procedures and staining solution applications on lightness, chroma and hue of zirconia-reinforced lithium silicate glass ceramics

Aim: The aim of this study was to evaluate the differences in lightness (ΔL), chroma (ΔC), and hue (ΔH) of zirconia-reinforced glass ceramic (ZLS) samples of various thicknesses, which underwent different surface finishing procedures, after aging and staining solutions. Methodology: Sixty samples of ZLS blocks were produced in two different thicknesses (12x14x1 mm, n=30; 12x14x1.5 mm, n=30), and different surface treatments were applied to them (mechanical polishing or glaze; n=15). After polishing and glazing, all samples were cleaned using an ultrasonic cleaner for 10 minutes. Color measurements were taken using a spectrophotometer before and after autoclave aging and immersion in staining solutions (tea, coffee, and coke), and color values were calculated using the CIEDE2000 formula. The Kolmogorov–Smirnov, Shapiro, three-way ANOVA, and Tukey HSD tests were used for statistical evaluation. Results: The common effects of surface finishing treatment, staining solution, and thickness interaction on ∆L and ∆C values were found to be statistically significant ( p <0.05), while the common effect on ∆H values was not found to be significant ( p >0.05). The ∆L and ∆H values (5.06 ± 1.60 and 2.95 ± 0.61, respectively) were the highest in the groups with 1 mm thickness, mechanical polishing, and immersion in tea solution. The highest ∆C value (4.21 ± 0.35) was noted for the group with 1 mm thickness, mechanical polishing, and immersion in cola solution. Conclusion: Differences in material thickness and the staining solution affected the lightness, hue, and chroma of the ZLS samples. The difference in the surface finishing procedure affected the hue and chroma but not the lightness. How to cite this article: Korkmaz C. Effects of different surface finishing procedures and staining solution applications on lightness, chroma and hue of zirconia-reinforced lithium silicate glass ceramics. Int Dent Res 2024;14(2):57-67. https://doi.org/10.5577/intdentres.538

Color, surface finishing, aging, lithium silicate, glass ceramic, zirconia

Cumhur Korkmaz
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57-67
Abstract Views: 1744 Download: 512 10.5577/intdentres.538
Evaluation of long-term trabecular changes around dental implants using fractal analysis

Aim: The aim of this study was to evaluate the long-term bone formation around functioning dental implants with prosthetic loading using the fractal analysis (FA) method. Methodology: The bone around four different brands of dental implants placed on maxillary and mandibular bone was evaluated by fractal analysis using panoramic radiographs taken before the dental implant was placed and after it had been functioning for at least 12 months. Fractal analysis was performed using the box-counting method. According to the conformity of the data to the normal distribution, the significance of the difference between the groups was interpreted by independent samples t-test and the Mann-Whitney U test. Results: No significant difference was observed in the fractal dimension of the bone surrounding the dental implant in the pre- and post-treatment radiographs ( p >0.05). No significant difference was observed when comparing patient gender and implant brands ( p >0.05). Conclusion: Regardless of the implant brand, patient gender, and the jaw in which the treatment was performed, there may be no significant difference between radiographs in the trabecular bone around the dental implants before implant treatment and after at least 12 months of function. Further and large-scale clinical studies on the subject are needed. How to cite this article: Güzelce Sultanoğlu E, Çitfçi Şişman A, Ünallı KE, Kan BM, Öke M. Evaluation of long-term trabecular changes around dental implants using fractal analysis. Int Dent Res 2024;14(2):68-75. https://doi.org/10.5577/intdentres.580

Fractal analysis, dental implant, osseointegration, implant-supported dental prosthesis, orthopantomograph

Elifnur Güzelce Sultanoğlu, Alanur Çitfçi Şişman, Kamile Esra Ünallı, Beyza Meryem Kan, Mert Öke
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68-75
Abstract Views: 3078 Download: 630 10.5577/intdentres.580
Evaluation of stress distribution in restorations of maxillary central incisor with post-traumatic enamel-dentin fracture using two different techniques: A micro-computed tomography study

Aim: The aim of this study is to investigate the stress distribution created by two restorative techniques, adhesive reattachment of the fractured fragment and direct composite restoration, used in the treatment of a maxillary central incisor with enamel-dentin fracture. The analysis is conducted using the finite element stress analysis method on a three-dimensional (3D) model prepared based on micro-computed tomography data, following the application of different adhesive procedures on fractured teeth. Methodology: The avulsed left maxillary central incisor was scanned using a micro-computed tomography device. The obtained data was transferred to a computer and used for 3D modeling. In the models, a fracture line was created obliquely at a 45° angle, 3 mm away from the mesial surface towards the distoincisal corner of the tooth. Six restorations were planned on this model: three direct composite restorations and three adhesives, reattachments followed by composite application. The models for the adhesive reattachment method included: (1) internal dentin groove, (2) palatal composite laminate veneer, and (3) double palatal retentive groove. The models for the composite restoration technique included: (1) composite laminate veneer, (2) direct composite restoration following enamel beveling, and (3) composite application after double palatal groove preparation. Upon completion of the restorations, a 100-N force was applied from the palatal direction using the finite element stress analysis method. The results were analyzed to examine the amount and distribution of stress on the restorations and the tooth. Results: In all models, the highest stress values within tooth structures were observed in the enamel. The lowest stress value in the enamel layer was seen in model R-1, whereas the highest stress value was observed in model K-2. For direct composite restorations, the stresses on enamel, dentin, and restoration were relatively similar in each model, with no significant differences noted among these values. Among all applied composite restorations, the lowest stress value was observed in model R-3. When analyzing the stresses generated at the tooth-restoration and tooth-fractured fragment interface of the six models, the lowest stress in the enamel was observed in models R-1 and K-3, while the highest stress was seen in model R-3. Conclusion: According to the data obtained from the models, the shape of the restoration applied on the tooth, the technique used, and the location of the restoration affect the amount and distribution of stress accumulated in the tooth and restoration. However, the stress analysis results are not sufficient to evaluate the clinical success of restorations. There is a need for further studies utilizing different techniques to support the models used. How to cite this article: Olgaç Akgönül Ş, Çelenk S, Adıgüzel Ö. Evaluation of stress distribution in restorations of maxillary central incisor with post-traumatic enamel-dentin fracture using two different techniques: A finite element analysis based on micro-computed tomography data. Int Dent Res 2024;14(2):76-83. https://doi.org/10.5577/intdentres.535

Reattachment technique, stress distribution, finite element analysis, micro-computed tomography, direct composite restoration, enamel dentin fracture

Seyma Olgaç Akgönül, Sema Çelenk, Özkan Adıgüzel
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76-83
Abstract Views: 2543 Download: 490 10.5577/intdentres.535
Does preheating affect the microleakage of bulk-fill composite restorations?

Aim: Microleakage is one of the most important factors in restoration failure in today’s dentistry. The aim of this in vitro study is to evaluate the microleakage of preheated bulk-fill composites. Methodology: In the study, 160 slot cavities prepared in the mesial and distal of 80 molar teeth were used. In the gingival of the cavities, Estelite Bulk Fill Flow (Tokuyama, Tokyo, Japan) in the mesial and SDR ® Posterior Bulk Fill Flowable Base (Dentsply, DeTrey, Konstanz, Germany) in the distal were used, and the remaining occlusal parts were restored using Filtek TM One Bulk Fill Restorative (3M, St Paul, MN, US). Composites were applied at four different temperatures (4 o C, room temperature, 39 o C and 55 o C). After finishing and polishing, specimens were thermocycled and then placed in 0.5% methylene blue for 24 hours. Specimens were sectioned into two parts in a mesiodistal direction, and the microleakage levels were examined by a stereomicroscope (x40). Results: In the statistical evaluation of the microleakage levels of Filtek TM One Bulk Fill Restorative applied at four different temperatures on the occlusal surface with One-way ANOVA, it was observed that there was a significant difference between the groups ( p =0.02). In the comparison of the microleakage values of Estelite Bulk Fill Flow applied in the gingival region with the one-way ANOVA test at four different temperatures, there was no statistically significant difference between the groups ( p >0.05), while there was a significant difference between the groups using SDR ® Posterior Bulk Fill Flowable Base ( p =0.002). The highest microleakage values were observed at 4 o C in all groups. Conclusion: The results obtained in the study show that heating bulk fill composites before polymerization is effective in reducing microleakages, but longer in vivo studies are required. How to cite this article: Aktuğ Karademir S, Akarsu S. Does preheating affect the microleakage of bulk fill composite restorations?. Int Dent Res 2024;14(2):84-92. https://doi.org/10.5577/intdentres.481

Bulk-fill composite, preheating, microleakage, composite restorations

Sultan Aktuğ Karademir, Serdar Akarsu
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84-92
Abstract Views: 1209 Download: 567 10.5577/intdentres.481

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Vol. 14 No. 2 (2024): International Dental Research

Full Issue

Original Article

One-year clinical evaluation of bone-level and tissue-level implants

Effects of different surface finishing procedures and staining solution applications on lightness, chroma and hue of zirconia-reinforced lithium silicate glass ceramics

Evaluation of long-term trabecular changes around dental implants using fractal analysis

Evaluation of stress distribution in restorations of maxillary central incisor with post-traumatic enamel-dentin fracture using two different techniques: A micro-computed tomography study

Does preheating affect the microleakage of bulk-fill composite restorations?