Objective To compare the skeletal, dentoalveolar and buccal bone thickness of tooth–bone-borne (H... more Objective To compare the skeletal, dentoalveolar and buccal bone thickness of tooth–bone-borne (Hybrid-H) and tooth-borne (TB) maxillary expanders used for rapid maxillary expansion (RME) in early and late adolescents and for surgically-assisted RME (SARME) in young adults. Materials and methods: This two-centre clinical study included initial and 6 months post-retention CBCT records of 60 patients (27 males, 33 females; mean age 15.7 ± 3.75 years). The cohort was divided into two groups according to the expander type (H or TB) and subdivided into a further three groups determined by cervical vertebrae maturation stages: early adolescents (EA), late adolescents (LA), and young adults (A). EA and LA patients underwent RME and young adults received a SARME. Results: The hybrid-designed appliance increased the internal skeletal maxillary width and nasal width more than the TB-designed appliance anteriorly in EA and posteriorly in SARME young adults. The TB expanders tipped and expanded...
ÖZET Amaç: Bu çalışmanın amacı, İstanbul’daki serbest diş hekimlerinin kök kanallarının boşaltılm... more ÖZET Amaç: Bu çalışmanın amacı, İstanbul’daki serbest diş hekimlerinin kök kanallarının boşaltılmasından sonra kullandıkları kimyasal ajanların kullanım oranlarını saptamak ve modern endodontinin diş hekimliği pratiğindeki yerini değerlendirmektir. Gereç ve Yöntemler: Bu çalışma, İstanbul’daki 235 serbest diş hekimi üzerinde yürütülen kesitsel bir araştırmadır. İstatistiksel incelemede ki-kare testi kullanılmıştır. Bulgular: Araştırmanın sonuçlarına göre, katılımcıların %82.6’sı sodyum hipokloriti (NaOCl), %33.6’sı etilendiamintetraasetikasidi (EDTA), %29.4’ü klorheksidin glukonatı (CHX), %25.5’i serum fizyolojiği (%0.9’luk NaCl) ve %23.4’ü hidrojen peroksidi (H2O2) yıkama solüsyonu olarak kullanmaktadır. Diş hekimleri genellikle birden fazla yıkama solüsyonunu birlikte tercih etmektedir. Ayrıca çok seanslı kanal tedavilerinde, seanslar arasında, hekimlerin %84,7’si kanalı kalsiyum hidroksit [Ca(OH)2] ile doldurmakta, %25.1’i kanala fenolik kanal antiseptiği içeren bir pamuk yerleşt...
Bond strength which is as high as that of acid etching under in vitro conditions was provided by ... more Bond strength which is as high as that of acid etching under in vitro conditions was provided by the laser which can be used more simply with a shorter clinical time than the acid etching. The aim of this study was to compare different orthodontic adhesives with the efficacy of Er: YAG laser for enamel conditioning. The effects of these adhesives’ types (single component orthodontic adhesives and glass carbomer cement) with lasers have not been studied previously. A total of 80 specimens were etched by irradiation of Er: YAG laser with 1.2-W power at 10 Hz and divided randomly into four groups (n = 20): group 1, bonding with Transbond XT primer with Transbond XT composite; group 2, Biofix; group 3, GC ortho connect; group 4; glass carbomer cement. Metal brackets were then bonded with adhesives. Shear bond strength tests were conducted on them in a universal testing machine after 24 h of water storage. A stereomicroscope was used to calculate the adhesive remnant index (ARI). The sta...
Purpose: The aim of this study was to assess the effects of tooth/bone-borne (hybrid) and tooth-b... more Purpose: The aim of this study was to assess the effects of tooth/bone-borne (hybrid) and tooth-borne (TB) surgically assisted rapid maxillary expansion (SARME) on the width of the nasal soft and hard tissue. Patients and methods: Twenty skeletally mature patients (nine males and 11 females; mean age 19.4 years) with transverse maxillary hypoplasia were randomly assigned to hybrid or TB devices. The patients had undergone SARME operations, performed by the same surgical team using the same procedure (Le Fort I osteotomy with pterygomaxillary dysjunction, midline osteotomy, and no down- fracture). Nasal soft- and hard-tissue changes were analyzed using CBCT preoperatively (T0), at the end of the active expansion phase (T1), and after 6 months of retention (T2). The study was approved by the relevant ethics committee. Results: The skeletal and soft-tissue nasal parameters increased significantly in the T0eT1 and T0eT2 periods in both groups (P < 0.05). No statistically significant differences between the groups were observed. The mean piriform aperture width increased from 1.26 mm in T0eT1 to 0.97 mm in T1eT2 and 2.17 mm in T0eT2 (P < 0.008). In the soft tissue, the alar base width increased to 2.78 mm and the alar width to 2.95 mm in T0eT2 (P 1⁄4 0.001). There was a positive correlation (63.6%) between the changes in skeletal and soft-tissue values. Conclusion: The hybrid and TB devices led to similarly significant widening effects in nasal soft and hard tissues in both the short term and 6 months after SARME.
The objective of this 2-arm, parallel, single-center trial was to compare the skeletal, dental, a... more The objective of this 2-arm, parallel, single-center trial was to compare the skeletal, dental, and periodontal effects of tooth-borne (TB) and hybrid devices in surgically assisted rapid maxillary expansion (SARME). Twenty consecutive patients (9 male and 11 female) with skeletal transverse maxillary deficiency seeking treatment at the Department of Orthodontics at Istanbul University in Istanbul, Turkey, were randomly assigned to 2 groups (10 patients each). Hybrid devices were inserted in the first group and TB (Hyrax) devices in the second. All of the patients had undergone SARME operations, which were carried out by the same surgeons using the same procedure (a Le Fort I osteotomy with pterygomaxillary dysjunction). All of the patients had similar transverse deficits, and 7 mm of expansion was achieved in all of them over 14 days. CBCT was carried out preoperatively (T0), at the end of the active expansion phase (T1), and after 6 months of retention (T2). Measurements were made using Mimics 16.0. Anterior skeletal maxillary widening parameters increased significantly in the T0-T1 and T0-T2 periods in the 2 groups (P = 0.001). There was significantly less dental expansion anteriorly with the hybrid devices (T0-T2: 4.03 mm vs. 6.29 mm). The first molars tipped buccally more in the group with TB devices during the T0-T1 phase (P = 0.029) and moved upright more than those in the group with hybrid devices during the retention phase (P = 0.035). Dental tipping, buccal alveolar bone resorption, and root resorption were observed significantly more often with the TB devices. Hybrid RME devices, with similar skeletal effects, different dental movement patterns, and fewer dental and periodontal side effects, thus appear to be a beneficial alternative to TB devices for SARME procedures.
Objectives To determine the effects of Salvianolic acid B (Sal B) on new bone formation in the or... more Objectives To determine the effects of Salvianolic acid B (Sal B) on new bone formation in the orthopedically expanded premaxillary sutures in rats. Materials and Methods The sample consisting of Sprague Dawley rats (male, n = 14) was split in half by random selection: the experiment group (Sal B) and the control group. The premaxillary suture of each rat was expanded by bonding an open-loop spring to two maxillary incisors, each end to one tooth. A 5-day expansion period followed by a 12-day retention period was conducted. The 17-day intraperitoneal administration of Sal B was performed daily for the experiment group at a dose of 40 mg/kilo. The trial was completed after sacrificing the rats and dissection of the premaxillae for histological analysis. The amount of new bone, quantity of capillaries and intensity of inflammatory cells were histomorphometrically determined while the quantities of osteoblasts and osteoclasts were determined immunohistochemically. Results The Sal B gro...
Journal of Cranio-Maxillo-Facial Surgery 47 (2019) 1190e1197, 2019
Purpose: The aim of this study was to assess the effects of tooth/bone-borne (hybrid) and tooth-b... more Purpose: The aim of this study was to assess the effects of tooth/bone-borne (hybrid) and tooth-borne (TB) surgically assisted rapid maxillary expansion (SARME) on the width of the nasal soft and hard tissue. Patients and methods: Twenty skeletally mature patients (nine males and 11 females; mean age 19.4 years) with transverse maxillary hypoplasia were randomly assigned to hybrid or TB devices. The patients had undergone SARME operations, performed by the same surgical team using the same procedure (Le Fort I osteotomy with pterygomaxillary dysjunction, midline osteotomy, and no down- fracture). Nasal soft- and hard-tissue changes were analyzed using CBCT preoperatively (T0), at the end of the active expansion phase (T1), and after 6 months of retention (T2). The study was approved by the relevant ethics committee. Results: The skeletal and soft-tissue nasal parameters increased significantly in the T0eT1 and T0eT2 periods in both groups (P < 0.05). No statistically significant differences between the groups were observed. The mean piriform aperture width increased from 1.26 mm in T0eT1 to 0.97 mm in T1eT2 and 2.17 mm in T0eT2 (P < 0.008). In the soft tissue, the alar base width increased to 2.78 mm and the alar width to 2.95 mm in T0eT2 (P 1⁄4 0.001). There was a positive correlation (63.6%) between the changes in skeletal and soft-tissue values. Conclusion: The hybrid and TB devices led to similarly significant widening effects in nasal soft and hard tissues in both the short term and 6 months after SARME.
Journal of Cranio-Maxillo-Facial Surgery 44 (2016) 285e293, Apr 2016
Purpose: The objective of this 2-arm, parallel, single-center trial was to compare the skeletal, ... more Purpose: The objective of this 2-arm, parallel, single-center trial was to compare the skeletal, dental, and periodontal effects of tooth-borne (TB) and hybrid devices in surgically assisted rapid maxillary expansion (SARME). Materials and methods: Twenty consecutive patients (9 male and 11 female) with skeletal transverse maxillary deficiency seeking treatment at the Department of Orthodontics at Istanbul University in Istanbul, Turkey, were randomly assigned to 2 groups (10 patients each). Hybrid devices were inserted in the first group and TB (Hyrax) devices in the second. All of the patients had undergone SARME operations , which were carried out by the same surgeons using the same procedure (a Le Fort I osteotomy with pterygomaxillary dysjunction). All of the patients had similar transverse deficits, and 7 mm of expansion was achieved in all of them over 14 days. CBCT was carried out preoperatively (T0), at the end of the active expansion phase (T1), and after 6 months of retention (T2). Measurements were made using Mimics 16.0. Results: Anterior skeletal maxillary widening parameters increased significantly in the T0eT1 and T0eT2 periods in the 2 groups (P ¼ 0.001). There was significantly less dental expansion anteriorly with the hybrid devices (T0eT2: 4.03 mm vs. 6.29 mm). The first molars tipped buccally more in the group with TB devices during the T0eT1 phase (P ¼ 0.029) and moved upright more than those in the group with hybrid devices during the retention phase (P ¼ 0.035). Dental tipping, buccal alveolar bone resorption, and root resorption were observed significantly more often with the TB devices. Conclusion: Hybrid RME devices, with similar skeletal effects, different dental movement patterns, and fewer dental and periodontal side effects, thus appear to be a beneficial alternative to TB devices for SARME procedures.
Objective To compare the skeletal, dentoalveolar and buccal bone thickness of tooth–bone-borne (H... more Objective To compare the skeletal, dentoalveolar and buccal bone thickness of tooth–bone-borne (Hybrid-H) and tooth-borne (TB) maxillary expanders used for rapid maxillary expansion (RME) in early and late adolescents and for surgically-assisted RME (SARME) in young adults. Materials and methods: This two-centre clinical study included initial and 6 months post-retention CBCT records of 60 patients (27 males, 33 females; mean age 15.7 ± 3.75 years). The cohort was divided into two groups according to the expander type (H or TB) and subdivided into a further three groups determined by cervical vertebrae maturation stages: early adolescents (EA), late adolescents (LA), and young adults (A). EA and LA patients underwent RME and young adults received a SARME. Results: The hybrid-designed appliance increased the internal skeletal maxillary width and nasal width more than the TB-designed appliance anteriorly in EA and posteriorly in SARME young adults. The TB expanders tipped and expanded...
ÖZET Amaç: Bu çalışmanın amacı, İstanbul’daki serbest diş hekimlerinin kök kanallarının boşaltılm... more ÖZET Amaç: Bu çalışmanın amacı, İstanbul’daki serbest diş hekimlerinin kök kanallarının boşaltılmasından sonra kullandıkları kimyasal ajanların kullanım oranlarını saptamak ve modern endodontinin diş hekimliği pratiğindeki yerini değerlendirmektir. Gereç ve Yöntemler: Bu çalışma, İstanbul’daki 235 serbest diş hekimi üzerinde yürütülen kesitsel bir araştırmadır. İstatistiksel incelemede ki-kare testi kullanılmıştır. Bulgular: Araştırmanın sonuçlarına göre, katılımcıların %82.6’sı sodyum hipokloriti (NaOCl), %33.6’sı etilendiamintetraasetikasidi (EDTA), %29.4’ü klorheksidin glukonatı (CHX), %25.5’i serum fizyolojiği (%0.9’luk NaCl) ve %23.4’ü hidrojen peroksidi (H2O2) yıkama solüsyonu olarak kullanmaktadır. Diş hekimleri genellikle birden fazla yıkama solüsyonunu birlikte tercih etmektedir. Ayrıca çok seanslı kanal tedavilerinde, seanslar arasında, hekimlerin %84,7’si kanalı kalsiyum hidroksit [Ca(OH)2] ile doldurmakta, %25.1’i kanala fenolik kanal antiseptiği içeren bir pamuk yerleşt...
Bond strength which is as high as that of acid etching under in vitro conditions was provided by ... more Bond strength which is as high as that of acid etching under in vitro conditions was provided by the laser which can be used more simply with a shorter clinical time than the acid etching. The aim of this study was to compare different orthodontic adhesives with the efficacy of Er: YAG laser for enamel conditioning. The effects of these adhesives’ types (single component orthodontic adhesives and glass carbomer cement) with lasers have not been studied previously. A total of 80 specimens were etched by irradiation of Er: YAG laser with 1.2-W power at 10 Hz and divided randomly into four groups (n = 20): group 1, bonding with Transbond XT primer with Transbond XT composite; group 2, Biofix; group 3, GC ortho connect; group 4; glass carbomer cement. Metal brackets were then bonded with adhesives. Shear bond strength tests were conducted on them in a universal testing machine after 24 h of water storage. A stereomicroscope was used to calculate the adhesive remnant index (ARI). The sta...
Purpose: The aim of this study was to assess the effects of tooth/bone-borne (hybrid) and tooth-b... more Purpose: The aim of this study was to assess the effects of tooth/bone-borne (hybrid) and tooth-borne (TB) surgically assisted rapid maxillary expansion (SARME) on the width of the nasal soft and hard tissue. Patients and methods: Twenty skeletally mature patients (nine males and 11 females; mean age 19.4 years) with transverse maxillary hypoplasia were randomly assigned to hybrid or TB devices. The patients had undergone SARME operations, performed by the same surgical team using the same procedure (Le Fort I osteotomy with pterygomaxillary dysjunction, midline osteotomy, and no down- fracture). Nasal soft- and hard-tissue changes were analyzed using CBCT preoperatively (T0), at the end of the active expansion phase (T1), and after 6 months of retention (T2). The study was approved by the relevant ethics committee. Results: The skeletal and soft-tissue nasal parameters increased significantly in the T0eT1 and T0eT2 periods in both groups (P &lt; 0.05). No statistically significant differences between the groups were observed. The mean piriform aperture width increased from 1.26 mm in T0eT1 to 0.97 mm in T1eT2 and 2.17 mm in T0eT2 (P &lt; 0.008). In the soft tissue, the alar base width increased to 2.78 mm and the alar width to 2.95 mm in T0eT2 (P 1⁄4 0.001). There was a positive correlation (63.6%) between the changes in skeletal and soft-tissue values. Conclusion: The hybrid and TB devices led to similarly significant widening effects in nasal soft and hard tissues in both the short term and 6 months after SARME.
The objective of this 2-arm, parallel, single-center trial was to compare the skeletal, dental, a... more The objective of this 2-arm, parallel, single-center trial was to compare the skeletal, dental, and periodontal effects of tooth-borne (TB) and hybrid devices in surgically assisted rapid maxillary expansion (SARME). Twenty consecutive patients (9 male and 11 female) with skeletal transverse maxillary deficiency seeking treatment at the Department of Orthodontics at Istanbul University in Istanbul, Turkey, were randomly assigned to 2 groups (10 patients each). Hybrid devices were inserted in the first group and TB (Hyrax) devices in the second. All of the patients had undergone SARME operations, which were carried out by the same surgeons using the same procedure (a Le Fort I osteotomy with pterygomaxillary dysjunction). All of the patients had similar transverse deficits, and 7 mm of expansion was achieved in all of them over 14 days. CBCT was carried out preoperatively (T0), at the end of the active expansion phase (T1), and after 6 months of retention (T2). Measurements were made using Mimics 16.0. Anterior skeletal maxillary widening parameters increased significantly in the T0-T1 and T0-T2 periods in the 2 groups (P = 0.001). There was significantly less dental expansion anteriorly with the hybrid devices (T0-T2: 4.03 mm vs. 6.29 mm). The first molars tipped buccally more in the group with TB devices during the T0-T1 phase (P = 0.029) and moved upright more than those in the group with hybrid devices during the retention phase (P = 0.035). Dental tipping, buccal alveolar bone resorption, and root resorption were observed significantly more often with the TB devices. Hybrid RME devices, with similar skeletal effects, different dental movement patterns, and fewer dental and periodontal side effects, thus appear to be a beneficial alternative to TB devices for SARME procedures.
Objectives To determine the effects of Salvianolic acid B (Sal B) on new bone formation in the or... more Objectives To determine the effects of Salvianolic acid B (Sal B) on new bone formation in the orthopedically expanded premaxillary sutures in rats. Materials and Methods The sample consisting of Sprague Dawley rats (male, n = 14) was split in half by random selection: the experiment group (Sal B) and the control group. The premaxillary suture of each rat was expanded by bonding an open-loop spring to two maxillary incisors, each end to one tooth. A 5-day expansion period followed by a 12-day retention period was conducted. The 17-day intraperitoneal administration of Sal B was performed daily for the experiment group at a dose of 40 mg/kilo. The trial was completed after sacrificing the rats and dissection of the premaxillae for histological analysis. The amount of new bone, quantity of capillaries and intensity of inflammatory cells were histomorphometrically determined while the quantities of osteoblasts and osteoclasts were determined immunohistochemically. Results The Sal B gro...
Journal of Cranio-Maxillo-Facial Surgery 47 (2019) 1190e1197, 2019
Purpose: The aim of this study was to assess the effects of tooth/bone-borne (hybrid) and tooth-b... more Purpose: The aim of this study was to assess the effects of tooth/bone-borne (hybrid) and tooth-borne (TB) surgically assisted rapid maxillary expansion (SARME) on the width of the nasal soft and hard tissue. Patients and methods: Twenty skeletally mature patients (nine males and 11 females; mean age 19.4 years) with transverse maxillary hypoplasia were randomly assigned to hybrid or TB devices. The patients had undergone SARME operations, performed by the same surgical team using the same procedure (Le Fort I osteotomy with pterygomaxillary dysjunction, midline osteotomy, and no down- fracture). Nasal soft- and hard-tissue changes were analyzed using CBCT preoperatively (T0), at the end of the active expansion phase (T1), and after 6 months of retention (T2). The study was approved by the relevant ethics committee. Results: The skeletal and soft-tissue nasal parameters increased significantly in the T0eT1 and T0eT2 periods in both groups (P < 0.05). No statistically significant differences between the groups were observed. The mean piriform aperture width increased from 1.26 mm in T0eT1 to 0.97 mm in T1eT2 and 2.17 mm in T0eT2 (P < 0.008). In the soft tissue, the alar base width increased to 2.78 mm and the alar width to 2.95 mm in T0eT2 (P 1⁄4 0.001). There was a positive correlation (63.6%) between the changes in skeletal and soft-tissue values. Conclusion: The hybrid and TB devices led to similarly significant widening effects in nasal soft and hard tissues in both the short term and 6 months after SARME.
Journal of Cranio-Maxillo-Facial Surgery 44 (2016) 285e293, Apr 2016
Purpose: The objective of this 2-arm, parallel, single-center trial was to compare the skeletal, ... more Purpose: The objective of this 2-arm, parallel, single-center trial was to compare the skeletal, dental, and periodontal effects of tooth-borne (TB) and hybrid devices in surgically assisted rapid maxillary expansion (SARME). Materials and methods: Twenty consecutive patients (9 male and 11 female) with skeletal transverse maxillary deficiency seeking treatment at the Department of Orthodontics at Istanbul University in Istanbul, Turkey, were randomly assigned to 2 groups (10 patients each). Hybrid devices were inserted in the first group and TB (Hyrax) devices in the second. All of the patients had undergone SARME operations , which were carried out by the same surgeons using the same procedure (a Le Fort I osteotomy with pterygomaxillary dysjunction). All of the patients had similar transverse deficits, and 7 mm of expansion was achieved in all of them over 14 days. CBCT was carried out preoperatively (T0), at the end of the active expansion phase (T1), and after 6 months of retention (T2). Measurements were made using Mimics 16.0. Results: Anterior skeletal maxillary widening parameters increased significantly in the T0eT1 and T0eT2 periods in the 2 groups (P ¼ 0.001). There was significantly less dental expansion anteriorly with the hybrid devices (T0eT2: 4.03 mm vs. 6.29 mm). The first molars tipped buccally more in the group with TB devices during the T0eT1 phase (P ¼ 0.029) and moved upright more than those in the group with hybrid devices during the retention phase (P ¼ 0.035). Dental tipping, buccal alveolar bone resorption, and root resorption were observed significantly more often with the TB devices. Conclusion: Hybrid RME devices, with similar skeletal effects, different dental movement patterns, and fewer dental and periodontal side effects, thus appear to be a beneficial alternative to TB devices for SARME procedures.
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Papers by Emre Kayalar
Results: The skeletal and soft-tissue nasal parameters increased significantly in the T0eT1 and T0eT2 periods in both groups (P < 0.05). No statistically significant differences between the groups were observed. The mean piriform aperture width increased from 1.26 mm in T0eT1 to 0.97 mm in T1eT2 and 2.17 mm in T0eT2 (P < 0.008). In the soft tissue, the alar base width increased to 2.78 mm and the alar width to 2.95 mm in T0eT2 (P 1⁄4 0.001). There was a positive correlation (63.6%) between the changes in skeletal and soft-tissue values.
Conclusion: The hybrid and TB devices led to similarly significant widening effects in nasal soft and hard tissues in both the short term and 6 months after SARME.
Results: The skeletal and soft-tissue nasal parameters increased significantly in the T0eT1 and T0eT2 periods in both groups (P < 0.05). No statistically significant differences between the groups were observed. The mean piriform aperture width increased from 1.26 mm in T0eT1 to 0.97 mm in T1eT2 and 2.17 mm in T0eT2 (P < 0.008). In the soft tissue, the alar base width increased to 2.78 mm and the alar width to 2.95 mm in T0eT2 (P 1⁄4 0.001). There was a positive correlation (63.6%) between the changes in skeletal and soft-tissue values.
Conclusion: The hybrid and TB devices led to similarly significant widening effects in nasal soft and hard tissues in both the short term and 6 months after SARME.