Objectives: the aim of this clinical study was to compare clinical and radiological outcomes of short dental implants inserted in pristine bone to standard length implants inserted in combination with sinus floor elevation.
Materials and methods: For this clinical study, the clinical and radiological outcome of 126 short dental implants (84 patients), inserted in pristine bone were compared with 312 standard length implants (156 patients), placed in combination with maxillary sinus floor elevation procedures.
Results: The short implant group (test group [TG]; mean follow-up (± standard deviation (SD) 56.6 ± 42.9 months) and the augmented group (control group [CG]; mean follow-up 41.6 ± 37.6 months) showed cumulative survival rates of 91.8% and 92.4%. Cumulative 5-year implant survival rates were 91.8% for the TG and 90.7% for the CG (p=0.421). Mean marginal bone loss was significantly higher in the CG than in the TG, with a mean MBL of 0.70 ± 0.72 mm in the TG and 0.96 ± 0.91 mm in the CG (p<0.001). A comparable and promising oral health-related quality of life (OHRQoL) was observed in the control and test groups.
Conclusions: After over 3 years, short implants placed in the resorbed posterior maxilla obtained similar results to standard implants combined with maxillary sinus floor augmentation procedures.
目的:本临床研究的目的是比较短牙种植体置入原始骨与标准长度种植体置入结合窦底抬高的临床和影像学结果。材料和方法:在这项临床研究中，将126个短种植体(84例患者)与312个标准长度种植体(156例患者)的临床和放射学结果进行比较，这些种植体与上颌窦底提升手术相结合。结果:短种植体组(试验组[TG];平均随访时间(±标准差(SD) 56.6±42.9个月)和增强组(对照组[CG];平均随访41.6±37.6个月)，累计生存率分别为91.8%和92.4%。TG组和CG组的累积5年种植体存活率分别为91.8%和90.7% (p=0.421)。TG组的平均边缘骨损失明显高于TG组，TG组的平均MBL为0.70±0.72 mm, CG组的平均MBL为0.96±0.91 mm(结论:在吸收后上颌放置短种植体3年多后，与标准种植体联合上颌窦底增强术获得相似的结果。
{"title":"Short versus Standard Length Implants with Sinus Floor Elevation for the Atrophic Posterior Maxilla.","authors":"Eik Schiegnitz, Nina Hill, Keyvan Sagheb, Jochem König, Kawe Sagheb, Bilal Al-Nawas","doi":"10.15644/asc56/2/5","DOIUrl":"https://doi.org/10.15644/asc56/2/5","url":null,"abstract":"<p><strong>Objectives: </strong>the aim of this clinical study was to compare clinical and radiological outcomes of short dental implants inserted in pristine bone to standard length implants inserted in combination with sinus floor elevation.</p><p><strong>Materials and methods: </strong>For this clinical study, the clinical and radiological outcome of 126 short dental implants (84 patients), inserted in pristine bone were compared with 312 standard length implants (156 patients), placed in combination with maxillary sinus floor elevation procedures.</p><p><strong>Results: </strong>The short implant group (test group [TG]; mean follow-up (± standard deviation (SD) 56.6 ± 42.9 months) and the augmented group (control group [CG]; mean follow-up 41.6 ± 37.6 months) showed cumulative survival rates of 91.8% and 92.4%. Cumulative 5-year implant survival rates were 91.8% for the TG and 90.7% for the CG (p=0.421). Mean marginal bone loss was significantly higher in the CG than in the TG, with a mean MBL of 0.70 ± 0.72 mm in the TG and 0.96 ± 0.91 mm in the CG (p<0.001). A comparable and promising oral health-related quality of life (OHRQoL) was observed in the control and test groups.</p><p><strong>Conclusions: </strong>After over 3 years, short implants placed in the resorbed posterior maxilla obtained similar results to standard implants combined with maxillary sinus floor augmentation procedures.</p>","PeriodicalId":7154,"journal":{"name":"Acta Stomatologica Croatica","volume":" ","pages":"143-153"},"PeriodicalIF":1.4,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/62/a8/ASC_56(2)_143-153.PMC9262115.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40515866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Natalija Prica, Asja Čelebić, Ines Kovačić, Nikola Petričević
Objectives: Little is known whether specialists in different dental fields assess orofacial esthetics differently due to various focus of their interest. The aim was to find out if there is a difference in judgement of orofacial esthetics among specialists in three different fields of Dental Medicine, i.e. specialists in Prosthodontics (S-Prosthod), Periodontology (S-Perio), and Orthodontics (S-Ortho).
Material and methods: A total of 69 specialists (23 participants in each group) assessed the same 60 photographs of the lower third of the face of young healthy people with Angle Class I and natural teeth while smiling. Moreover, the assessed anterior teeth on the photographs of similes had to be without any restorations. The assessments were made using 7 out of 8 Items of Orofacial Esthetic Scale (OES). A face profile assessment was not performed. A Likert 1-5 scale was used for assessments (1-the worst score; 5-the best score). Mean values of summary scores as well as of each OES item were calculated for each specialist for further statistical analysis. One-sample Kolmogorov-Smirnov test, descriptive statistics, one-way ANOVA, and Sheffe post-hoc tests were performed.
Results: The specialists in Periodontology gave significantly lowest scores to all 7 items related to orofacial esthetics, while the specialists in Prosthodontics gave the highest scores (p<0.05).
Conclusion: Assessments of orofacial esthetics differ significantly among specialists in Prosthodontics, Periodontology and Orthodontics. Further study is needed to clarify the factors which influence the judgement, and to find out if specific education in certain specialties can modify the assessment.
{"title":"Assessment of Orofacial Esthetics among Different Specialists in Dental Medicine: A pilot study.","authors":"Natalija Prica, Asja Čelebić, Ines Kovačić, Nikola Petričević","doi":"10.15644/asc56/2/8","DOIUrl":"https://doi.org/10.15644/asc56/2/8","url":null,"abstract":"<p><strong>Objectives: </strong>Little is known whether specialists in different dental fields assess orofacial esthetics differently due to various focus of their interest. The aim was to find out if there is a difference in judgement of orofacial esthetics among specialists in three different fields of Dental Medicine, i.e. specialists in Prosthodontics (S-Prosthod), Periodontology (S-Perio), and Orthodontics (S-Ortho).</p><p><strong>Material and methods: </strong>A total of 69 specialists (23 participants in each group) assessed the same 60 photographs of the lower third of the face of young healthy people with Angle Class I and natural teeth while smiling. Moreover, the assessed anterior teeth on the photographs of similes had to be without any restorations. The assessments were made using 7 out of 8 Items of Orofacial Esthetic Scale (OES). A face profile assessment was not performed. A Likert 1-5 scale was used for assessments (1-the worst score; 5-the best score). Mean values of summary scores as well as of each OES item were calculated for each specialist for further statistical analysis. One-sample Kolmogorov-Smirnov test, descriptive statistics, one-way ANOVA, and Sheffe post-hoc tests were performed.</p><p><strong>Results: </strong>The specialists in Periodontology gave significantly lowest scores to all 7 items related to orofacial esthetics, while the specialists in Prosthodontics gave the highest scores (p<0.05).</p><p><strong>Conclusion: </strong>Assessments of orofacial esthetics differ significantly among specialists in Prosthodontics, Periodontology and Orthodontics. Further study is needed to clarify the factors which influence the judgement, and to find out if specific education in certain specialties can modify the assessment.</p>","PeriodicalId":7154,"journal":{"name":"Acta Stomatologica Croatica","volume":" ","pages":"169-175"},"PeriodicalIF":1.4,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/4a/8a/ASC_56(2)_169-175.PMC9262108.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40497668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
André Luca Araujo de Sousa, Wanderson Carvalho de Almeida, Jean de Pinho Mendes, Victor Angelo Martins Montalli, Antonione Santos Bezerra Pinto
The Melanotic Neuroectodermal Tumor of Infancy (MNTI) is an asymptomatic, pigmented neoplasm characterized by a fast and locally aggressive growth along with a rare tissue formation. In the diagnostic process, the use of imaging exams can suggest a local destruction suggestive of malignancy, a sign of bone remodeling and expansion. Therefore, as any early diagnosis minimizes risks and improves the prognosis of treatment for the patient, the aim of this study was, based on a clinical case report, to corroborate the use of histopathological analysis associated with immunohistochemistry. Thus, we conclude that the immunohistochemical exam is of great importance for a better complementation of the MNTI diagnosis process. In addition, it can reveal signs of possible aggressive growth.
{"title":"Melanotic Neuroectodermal Tumor of Infancy: the Use of Immunohistochemical Analysis.","authors":"André Luca Araujo de Sousa, Wanderson Carvalho de Almeida, Jean de Pinho Mendes, Victor Angelo Martins Montalli, Antonione Santos Bezerra Pinto","doi":"10.15644/asc56/2/9","DOIUrl":"https://doi.org/10.15644/asc56/2/9","url":null,"abstract":"<p><p>The Melanotic Neuroectodermal Tumor of Infancy (MNTI) is an asymptomatic, pigmented neoplasm characterized by a fast and locally aggressive growth along with a rare tissue formation. In the diagnostic process, the use of imaging exams can suggest a local destruction suggestive of malignancy, a sign of bone remodeling and expansion. Therefore, as any early diagnosis minimizes risks and improves the prognosis of treatment for the patient, the aim of this study was, based on a clinical case report, to corroborate the use of histopathological analysis associated with immunohistochemistry. Thus, we conclude that the immunohistochemical exam is of great importance for a better complementation of the MNTI diagnosis process. In addition, it can reveal signs of possible aggressive growth.</p>","PeriodicalId":7154,"journal":{"name":"Acta Stomatologica Croatica","volume":" ","pages":"176-182"},"PeriodicalIF":1.4,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/7f/c2/ASC_56(2)_176-182.PMC9262114.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40497670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Luna, Nicholas S. Wolsefer, Carlos-Xavier Zambrano, I. Stojanov
Objective Giant cell lesions of the jaws (GCLJ) may rarely occur in the setting of RASopathy syndromes such as Noonan syndrome or neurofibromatosis I. Recently, central giant cell granulomas (CGCG), the most common of the GCLJ, have been recognized as benign neoplasms characterized by Ras/MAPK signaling pathway mutations. This provides a rational basis for understanding GCLJ in RASopathy syndromes as syndromically occurring CGCG. This review aims to summarize the clinicopathologic features of syndromic CGCG and to review the salient clinical and craniofacial features of the syndromes in which they may rarely occur. Material and Methods An electronic search in 3 databases was performed, looking for GCLJ/CGCG in RASopathy syndromes. Results 124 CGCG in 56 patients were identified across 6 RASopathy syndromes. Median age at syndromic CGCG diagnosis is 11 years; 69.6% (39/56) patients developed two or more CGCG; 58.9% (33/56) presented with bilateral posterior mandibular CGCGs, mimicking cherubism. Of 88 CGCG with follow-up, 22.4% (13/58) of excised/resected CGCG recurred while 46.7% (14/30) of monitored CGCG showed continued growth. Conclusion Syndromic CGCG involves multiple RASopathy syndromes and may mimic cherubism or, when solitary, sporadically occurring CGCG. Familiarity with other clinical findings of RASopathy syndromes is critical for appropriate diagnosis and patient management.
{"title":"Giant Cell Lesions of the Jaws Involving RASopathy Syndromes","authors":"M. Luna, Nicholas S. Wolsefer, Carlos-Xavier Zambrano, I. Stojanov","doi":"10.15644/asc56/1/9","DOIUrl":"https://doi.org/10.15644/asc56/1/9","url":null,"abstract":"Objective Giant cell lesions of the jaws (GCLJ) may rarely occur in the setting of RASopathy syndromes such as Noonan syndrome or neurofibromatosis I. Recently, central giant cell granulomas (CGCG), the most common of the GCLJ, have been recognized as benign neoplasms characterized by Ras/MAPK signaling pathway mutations. This provides a rational basis for understanding GCLJ in RASopathy syndromes as syndromically occurring CGCG. This review aims to summarize the clinicopathologic features of syndromic CGCG and to review the salient clinical and craniofacial features of the syndromes in which they may rarely occur. Material and Methods An electronic search in 3 databases was performed, looking for GCLJ/CGCG in RASopathy syndromes. Results 124 CGCG in 56 patients were identified across 6 RASopathy syndromes. Median age at syndromic CGCG diagnosis is 11 years; 69.6% (39/56) patients developed two or more CGCG; 58.9% (33/56) presented with bilateral posterior mandibular CGCGs, mimicking cherubism. Of 88 CGCG with follow-up, 22.4% (13/58) of excised/resected CGCG recurred while 46.7% (14/30) of monitored CGCG showed continued growth. Conclusion Syndromic CGCG involves multiple RASopathy syndromes and may mimic cherubism or, when solitary, sporadically occurring CGCG. Familiarity with other clinical findings of RASopathy syndromes is critical for appropriate diagnosis and patient management.","PeriodicalId":7154,"journal":{"name":"Acta Stomatologica Croatica","volume":"56 1","pages":"77 - 88"},"PeriodicalIF":1.4,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49492127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Objectives This study aimed to evaluate the effects of root canal irrigation on maximum operative torque and vertical force of Wave One Gold Primary (WOG), Reciproc Blue R25 (RB) and Protaper Next X2 (PTN) endodontic rotary instruments during simulated root canal preparation in the presence and absence of a surfactant “benzalkonium chloride”. Material and Methods A custom-made automated irrigation and torque/force analyzing device connected with endomotor was used for the study. Acrylic resin blocks with simulated curved root canals of 35° were randomly assigned to 6 groups for each file. The following irrigants were used during simulated root canal preparation with continuous rotation or reciprocation motion with pecking mode: 5% NaOCl and 5% NaOCl with 0.84% benzalkonium chloride. Maximum torque and vertical force values of files were recorded during preparation. Results BAC addition to NaOCl did not significantly affect maximum torque values of instruments (p>0.05). WOG generated lowest torque value compared with PTN and RCB in both groups (p<0. 05). RB generated higher vertical force compared with WOG and PTN instruments in NaOCl+BAC group. The surface modifier decreased the maximum force value of WOG instrument (p<0.05). Discussion Surfactan addition to NaOCl had no negative effects on maximum torque and force of the instruments.
目的研究在存在和不存在表面活性剂“苯扎氯铵”的情况下，根管冲洗对Wave One Gold Primary (WOG)、Reciproc Blue R25 (RB)和Protaper Next X2 (PTN)根管旋转器械在模拟根管预备过程中最大操作扭矩和垂直力的影响。材料与方法采用自制的自动灌洗及扭矩/力分析装置，与内源性马达连接。采用模拟根管弯曲度为35°的丙烯酸树脂块，每个锉随机分为6组。在模拟根管预备过程中，使用连续旋转或往复运动的灌洗剂:5% NaOCl和5% NaOCl加0.84%苯扎氯铵。在制备过程中记录了锉的最大扭矩和垂直力值。结果BAC加入NaOCl对仪器最大扭矩值无显著影响(p < 0.05)。与PTN和RCB相比，两组WOG产生的扭矩值最低(p<0。05)。NaOCl+BAC组RB产生的垂直力高于WOG和PTN组。表面改性剂降低WOG器械的最大受力值(p<0.05)。讨论NaOCl中加入表面活性剂对仪器的最大扭矩和力没有负面影响。
{"title":"Effect of Sodium Hypochlorite Irrigation with and Without Surfactant on Maximum Operative Torque and Vertical Force of Nickel-Titanium Endodontic Instruments","authors":"E. Aslantaş, Sevinc Askerbeyli Ors, A. Serper","doi":"10.15644/asc56/1/4","DOIUrl":"https://doi.org/10.15644/asc56/1/4","url":null,"abstract":"Objectives This study aimed to evaluate the effects of root canal irrigation on maximum operative torque and vertical force of Wave One Gold Primary (WOG), Reciproc Blue R25 (RB) and Protaper Next X2 (PTN) endodontic rotary instruments during simulated root canal preparation in the presence and absence of a surfactant “benzalkonium chloride”. Material and Methods A custom-made automated irrigation and torque/force analyzing device connected with endomotor was used for the study. Acrylic resin blocks with simulated curved root canals of 35° were randomly assigned to 6 groups for each file. The following irrigants were used during simulated root canal preparation with continuous rotation or reciprocation motion with pecking mode: 5% NaOCl and 5% NaOCl with 0.84% benzalkonium chloride. Maximum torque and vertical force values of files were recorded during preparation. Results BAC addition to NaOCl did not significantly affect maximum torque values of instruments (p>0.05). WOG generated lowest torque value compared with PTN and RCB in both groups (p<0. 05). RB generated higher vertical force compared with WOG and PTN instruments in NaOCl+BAC group. The surface modifier decreased the maximum force value of WOG instrument (p<0.05). Discussion Surfactan addition to NaOCl had no negative effects on maximum torque and force of the instruments.","PeriodicalId":7154,"journal":{"name":"Acta Stomatologica Croatica","volume":"56 1","pages":"33 - 41"},"PeriodicalIF":1.4,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48483423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Introduction Caries has a harmful impact on oral and general health and is a major public health problem among children and adolescents. The objective of present study was to investigate into dental caries, oral hygiene, the frequency of brushing habits and dental visits among 15- year- old adolescents. Material and methods This cross-sectional study was carried out on a random sample of 323 15- year- old adolescents in different schools and municipalities of Kosovo. Oral clinical examination and self-administered questionnaire were used to obtain information about dental caries and oral health practices. Oral hygiene and caries status in permanent dentition was assessed through the DMFT index and Oral Hygiene Index - Simplified (OHI-S). The level of statistical significance was set at p<0.05. Results The total mean of the DMFT index was 3.21 ± 2.193, while component D of the DMFT index dominated in both genders, with slightly higher values in boys compared to girls (2.15±2.092, and 1.91±1.919). The mean OHI-S index of adolescents aged 15 was found to be 1.945±3.926. Over 50% of schoolchildren brush their teeth only once per day and they have visited the dentist only when it was necessary. Irregular tooth-brushing, dental visits and poor oral hygiene index were significantly related to dental caries. Conclusion The results of the study showed poor oral health status among 15- year- old adolescents in Kosovo. There is an emergent need for caries-prevention programs focusing on oral health and healthy habits.
{"title":"Dental Caries Prevalence and Oral Health Status among 15-Year- Old Adolescents in Kosovo","authors":"Lulëjeta Ferizi, Venera Bimbashi, J. Kelmendi","doi":"10.15644/asc56/1/5","DOIUrl":"https://doi.org/10.15644/asc56/1/5","url":null,"abstract":"Introduction Caries has a harmful impact on oral and general health and is a major public health problem among children and adolescents. The objective of present study was to investigate into dental caries, oral hygiene, the frequency of brushing habits and dental visits among 15- year- old adolescents. Material and methods This cross-sectional study was carried out on a random sample of 323 15- year- old adolescents in different schools and municipalities of Kosovo. Oral clinical examination and self-administered questionnaire were used to obtain information about dental caries and oral health practices. Oral hygiene and caries status in permanent dentition was assessed through the DMFT index and Oral Hygiene Index - Simplified (OHI-S). The level of statistical significance was set at p<0.05. Results The total mean of the DMFT index was 3.21 ± 2.193, while component D of the DMFT index dominated in both genders, with slightly higher values in boys compared to girls (2.15±2.092, and 1.91±1.919). The mean OHI-S index of adolescents aged 15 was found to be 1.945±3.926. Over 50% of schoolchildren brush their teeth only once per day and they have visited the dentist only when it was necessary. Irregular tooth-brushing, dental visits and poor oral hygiene index were significantly related to dental caries. Conclusion The results of the study showed poor oral health status among 15- year- old adolescents in Kosovo. There is an emergent need for caries-prevention programs focusing on oral health and healthy habits.","PeriodicalId":7154,"journal":{"name":"Acta Stomatologica Croatica","volume":"56 1","pages":"42 - 49"},"PeriodicalIF":1.4,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44143380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Objectives Dentin thickness in concave areas of the root creates risk for complications such as strip perforation during endodontic treatment. The study aims to examine dentin thickness of the danger (DZ) and safety zone (SZ), canal configuration, and the presence of isthmus in the mesiobuccal root of maxillary molars. Material and Methods Cone-beam Computed Tomography (CBCT) images of 1251 teeth belonging to 642 patients were retrospectively reviewed. The dentin thicknesses at DZ and SZ in maxillary molars with one (MB) or two mesiobuccal canals (MB1, MB2) were measured at the 3 mm apical to the furcation level. Vertucci's canal configurations and the isthmus rate were recorded. The Chi-square test andThe Student’s t-test were performed. Results MB2 rate was higher in maxillary first molars (61.68%) than second molars (39.36%). Isthmus rates were 27.3% and 44.11% in first and second molars. DZ thickness was thinner than the dentin thickness in the SZ in both first and second molars with one or two mesial canals (p< 0.05). In teeth with single canal, the mean DZ thickness was 0.88mm. In teeth with two canals, the mean DZ thicknesses were 0.83mm and 0.80mm for MB1 and MB2 canals, respectively. Conclusion MB2 rate was higher in the first molar (61.68%), and the isthmus rate was higher in the second molar (44.11%). DZ and SZ were thinner in MB2 than in MB1 at the maxillary molars with two mesial canals. The results indicated that more conservative preparation must be applied to the MB2 canal in the maxillary molars.
{"title":"Dentin Thickness at Danger Zone and Canal Morphology of Maxillary Molars","authors":"Deniz Yanık, Ahmet Mert Nalbantoğlu","doi":"10.15644/asc56/1/6","DOIUrl":"https://doi.org/10.15644/asc56/1/6","url":null,"abstract":"Objectives Dentin thickness in concave areas of the root creates risk for complications such as strip perforation during endodontic treatment. The study aims to examine dentin thickness of the danger (DZ) and safety zone (SZ), canal configuration, and the presence of isthmus in the mesiobuccal root of maxillary molars. Material and Methods Cone-beam Computed Tomography (CBCT) images of 1251 teeth belonging to 642 patients were retrospectively reviewed. The dentin thicknesses at DZ and SZ in maxillary molars with one (MB) or two mesiobuccal canals (MB1, MB2) were measured at the 3 mm apical to the furcation level. Vertucci's canal configurations and the isthmus rate were recorded. The Chi-square test andThe Student’s t-test were performed. Results MB2 rate was higher in maxillary first molars (61.68%) than second molars (39.36%). Isthmus rates were 27.3% and 44.11% in first and second molars. DZ thickness was thinner than the dentin thickness in the SZ in both first and second molars with one or two mesial canals (p< 0.05). In teeth with single canal, the mean DZ thickness was 0.88mm. In teeth with two canals, the mean DZ thicknesses were 0.83mm and 0.80mm for MB1 and MB2 canals, respectively. Conclusion MB2 rate was higher in the first molar (61.68%), and the isthmus rate was higher in the second molar (44.11%). DZ and SZ were thinner in MB2 than in MB1 at the maxillary molars with two mesial canals. The results indicated that more conservative preparation must be applied to the MB2 canal in the maxillary molars.","PeriodicalId":7154,"journal":{"name":"Acta Stomatologica Croatica","volume":"56 1","pages":"50 - 60"},"PeriodicalIF":1.4,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43496131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Korać, Muhamed Ajanović, Aida Džanković, A. Konjhodžić, L. Hasić-Branković, Alma Gavranović-Glamoč, I. Tahmiščija
Objectives The study aimed to compare the color stability of two different light-cured composites after immersion in three liquids and the effectiveness of 16% carbamide peroxide (CP) in removing the discoloration. Material and methods Color stability of a microhybrid (Z250, 3M ESPE) and nanocomposite (Z550, 3M ESPE) was evaluated after immersion in instant coffee, tea, Coca-Cola, and deionized water as a control group (n=5). Samples were kept in liquids for four hours daily at 37°C for 30 days. Furthermore, 16% CP was applied for the following 14 days, simulating night whitening. A digital spectrophotometer was used for color measurement based on the CIEL*a*b* color coordinates. The color changes (∆E) were measured at baseline, after immersion in the beverages, and also after the teeth whitening procedure. Mixed and factorial ANOVA followed by Bonferroni’s post-hoc test were used for statistical evaluation (p≤0.05). Results Tested resin composites showed a color change over the acceptability threshold (ΔE*> 3.48) after immersion in coffee and tea. Nanocomposite reported a significant increase in discoloration in coffee after 30 days (p <0.05). The color of both materials significantly changed (p<0.05) along all three L*a*b* axes in coffee and tea to darker, yellow, and red. Whitening with 16% CP was effective in removing external discoloration in both examined composite materials. Conclusion Coffee and tea induced clinically detectable color changes in dental composites tested, with cumulative effects. Whitening represents an efficient method for the removal of surface discoloration in composite restorations.
{"title":"Color Stability of Dental Composites after Immersion in Beverages and Performed Whitening Procedures","authors":"S. Korać, Muhamed Ajanović, Aida Džanković, A. Konjhodžić, L. Hasić-Branković, Alma Gavranović-Glamoč, I. Tahmiščija","doi":"10.15644/asc56/1/3","DOIUrl":"https://doi.org/10.15644/asc56/1/3","url":null,"abstract":"Objectives The study aimed to compare the color stability of two different light-cured composites after immersion in three liquids and the effectiveness of 16% carbamide peroxide (CP) in removing the discoloration. Material and methods Color stability of a microhybrid (Z250, 3M ESPE) and nanocomposite (Z550, 3M ESPE) was evaluated after immersion in instant coffee, tea, Coca-Cola, and deionized water as a control group (n=5). Samples were kept in liquids for four hours daily at 37°C for 30 days. Furthermore, 16% CP was applied for the following 14 days, simulating night whitening. A digital spectrophotometer was used for color measurement based on the CIEL*a*b* color coordinates. The color changes (∆E) were measured at baseline, after immersion in the beverages, and also after the teeth whitening procedure. Mixed and factorial ANOVA followed by Bonferroni’s post-hoc test were used for statistical evaluation (p≤0.05). Results Tested resin composites showed a color change over the acceptability threshold (ΔE*> 3.48) after immersion in coffee and tea. Nanocomposite reported a significant increase in discoloration in coffee after 30 days (p <0.05). The color of both materials significantly changed (p<0.05) along all three L*a*b* axes in coffee and tea to darker, yellow, and red. Whitening with 16% CP was effective in removing external discoloration in both examined composite materials. Conclusion Coffee and tea induced clinically detectable color changes in dental composites tested, with cumulative effects. Whitening represents an efficient method for the removal of surface discoloration in composite restorations.","PeriodicalId":7154,"journal":{"name":"Acta Stomatologica Croatica","volume":"56 1","pages":"22 - 32"},"PeriodicalIF":1.4,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47765931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Natalia Drenski Balija, Boris Aurer, S. Meštrović, M. Lapter Varga
Aim The aim of this retrospective study was to determine the frequency of hypodontia, hyperdontia, invagination, impaction, dilacerations, peg-shaped lateral incisors, taurodontism and short or blunt and narrow or pipette-shaped roots in Croatian orthodontic patients. Material and methods 506 orthopantomographs and study casts from 12-16 year-old orthodontic patients treated at the Department of Orthodontics, School of Dental Medicine University of Zagreb were analyzed. Results At least one dental anomaly was present in 24.1% of patients, and more than anomaly in 1.2% of them. The frequency was not significantly different between genders. Hypodontia was the most frequent anomaly with the incidence of 7.5%, followed by teeth impaction with the incidence of 6.3%. Conclusion The distribution and the prevalence of anomalies were similar to those described in the general Croatian population.
{"title":"Prevalence of Dental Anomalies in Orthodontic Patients","authors":"Natalia Drenski Balija, Boris Aurer, S. Meštrović, M. Lapter Varga","doi":"10.15644/asc56/1/7","DOIUrl":"https://doi.org/10.15644/asc56/1/7","url":null,"abstract":"Aim The aim of this retrospective study was to determine the frequency of hypodontia, hyperdontia, invagination, impaction, dilacerations, peg-shaped lateral incisors, taurodontism and short or blunt and narrow or pipette-shaped roots in Croatian orthodontic patients. Material and methods 506 orthopantomographs and study casts from 12-16 year-old orthodontic patients treated at the Department of Orthodontics, School of Dental Medicine University of Zagreb were analyzed. Results At least one dental anomaly was present in 24.1% of patients, and more than anomaly in 1.2% of them. The frequency was not significantly different between genders. Hypodontia was the most frequent anomaly with the incidence of 7.5%, followed by teeth impaction with the incidence of 6.3%. Conclusion The distribution and the prevalence of anomalies were similar to those described in the general Croatian population.","PeriodicalId":7154,"journal":{"name":"Acta Stomatologica Croatica","volume":"56 1","pages":"61 - 68"},"PeriodicalIF":1.4,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42763894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Roko Bjelica, J. Viskić, G. Batinjan, I. Filipović Zore
Correct implant positioning poses a major challenge in modern dentistry and mismatch between the planned and final implant position is one of the most common treatment complications. A surgical guide or a template is a ''transmission device'' which enables the implant placement in the intended position as accurate as possible. Case study: A woman aged 60 came into dental office to resolve a single tooth loss in regions 15 and 24. Radiographic analysis and clinical examination showed a lack of transversal space in the regions of implantation. Considering the fact of having a narrow area available for implantation, a computer-guided implant therapy using the M-Guide system was selected. The treatment plan was a prosthetic restoration involving the placement of two implants in areas 15 and 24 and the fabrication of zirconium oxide crowns. After digital planning, a fully guided surgical protocol was performed. Immediately after implantation, a temporary suprastructure and temporary crowns were placed. After a period of osseointegration, a definitive prosthetic restoration was made.
{"title":"Implantoprosthetic Rehabilitation by Computer-guided Implant Surgery (M-Guide): Case report","authors":"Roko Bjelica, J. Viskić, G. Batinjan, I. Filipović Zore","doi":"10.15644/asc56/1/10","DOIUrl":"https://doi.org/10.15644/asc56/1/10","url":null,"abstract":"Correct implant positioning poses a major challenge in modern dentistry and mismatch between the planned and final implant position is one of the most common treatment complications. A surgical guide or a template is a ''transmission device'' which enables the implant placement in the intended position as accurate as possible. Case study: A woman aged 60 came into dental office to resolve a single tooth loss in regions 15 and 24. Radiographic analysis and clinical examination showed a lack of transversal space in the regions of implantation. Considering the fact of having a narrow area available for implantation, a computer-guided implant therapy using the M-Guide system was selected. The treatment plan was a prosthetic restoration involving the placement of two implants in areas 15 and 24 and the fabrication of zirconium oxide crowns. After digital planning, a fully guided surgical protocol was performed. Immediately after implantation, a temporary suprastructure and temporary crowns were placed. After a period of osseointegration, a definitive prosthetic restoration was made.","PeriodicalId":7154,"journal":{"name":"Acta Stomatologica Croatica","volume":"56 1","pages":"89 - 94"},"PeriodicalIF":1.4,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46703843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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