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    Correlation of skeletal development and midpalatal suture maturation
    (Bmc, 2024) Hezenci, Yasin; Bulut, Musa
    ObjectivesThe aim of our study is to determine the relationship between MPS maturation and CVM stage determined from CBCTs.Materials and methodsCBCT images of 130 individuals (75 females, 55 males) with a mean age of 15.04 +/- 3.11 (9.56-25.05 years) were analyzed. Images were analyzed using the i-CAT Vision software program. The cephalometric images to be examined were also obtained from the same CBCT images with the ImageJ program. The correlation between MPS and CVM stages was evaluated using the Spearman correlation test. The relationship between the skeletal developmental stage and MPS maturation, as assessed by the CVM method, was evaluated with the positive likelihood ratio.ResultsSignificant correlations were found between CVM and MPS maturation stages. Positive LHR values of cervical vertebral stages were obtained to define the maturation stages of the midpalatal suture. LHR values greater than ten were found between CS2, CS5, and CS6 and maturation stages B, D, and E, respectively. A 15-30% correlation was observed between CS3 and CS4 maturation stages B and C, respectively. A positive correlation of 15% was found between CS3 and stage C.ConclusionMPS fusion is more likely to occur after CS4. The correlation between the CVM and MPS maturation stages is significant (r = 0.858). CVM stages CS2, CS4, and CS6 can be a preliminary indicator for MPS stages B, D, and E, respectively. CS5 shows that MPS fusion has occurred partially or completely.Clinical relevanceA significant relationship exists between skeletal developmental stages and suture maturation.
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    Effect of mouthwashes on the discoloration of bracket-bonded tooth surfaces: an in vitro study
    (Springer Heidelberg, 2020) Korkmaz, Yasemin Nur; Bulut, Musa
    Objectives This in vitro study aimed to investigate the color changes of the bracket-bonded tooth surfaces after the use of 4 different mouthwashes. Materials and methods A total of 100 human premolar teeth were randomly divided into 10 equal groups. Color values (L*a*b*) of the buccal surfaces of each tooth were assessed using a digital spectrophotometer. Then the brackets were bonded. The groups were put either in sterile saline (4 test+1 control) or artificial saliva (4 test+1 control) solutions, and test groups were immersed in their mouthwashes (Colgate Plax, Listerine Cool Mint, Klorhex, and Tantum Verde) for 1 min each in the morning/evening to simulate the mouth washing for 21 days after the bonding. After the debonding and finishing procedures, final color measurements were performed. Color changes ( increment E) were calculated. Results All of the parameters showed statistically significant differences among the groups. The least noticeable color changes were detected in the control groups. The most noticeable color change (Delta E) was observed in the Tantum Verde + artificial saliva group, followed by Tantum Verde + sterile saline and Klorhex + artificial saliva groups, all of which were significantly higher than the control groups. Conclusion The use of mouthwashes during orthodontic treatment may cause noticeable changes in tooth color. Listerine Cool Mint may be the choice of mouthwash with its less discoloring effects. Artificial saliva should be preferred in similar in vitro studies to reflect the oral environment better.
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    Effect of rapid maxillary expansion on intracranial pressure
    (Cell Press, 2024) Hezenci, Yasin; Bulut, Musa; Demirel, Oguzhan
    Objective: The aim of this study was to evaluate the effects of rapid maxillary expansion on the optic nerve sheath diameter and to examine its possible effects on intracranial pressure. Design: 20 patients with bilateral crossbite were selected. Hyrax Expander was applied and activated twice daily until the overcorrection was achieved. The optic nerve sheath diameter (ONSD) was measured via ultrasonography before the first activation (T0), then repeated after 1 (T1) and 10 min (T2). At the end of the expansion, ONSD was measured (T3) again, then the screw was activated for the last time, and measurements were repeated after 1 (T4) and 10 min (T5). The Friedman test was performed to compare the changes, and The Wilcoxon Signed-Rank test was done to determine the significant intergroup changes (p < 0.05). Results: The ONSD increased significantly 1 min after the activations (T0-T1 and T3-T4) (P < 0.05). The ONSD values measured 10 min after the activations also increased significantly compared to the baseline values (T0-T2 and T3-T5) (P < 0.05). Conclusion: The activation of maxillary expansion appliances increased the optic nerve sheath diameter in adolescents. Therefore, orthodontists should be careful with patients at risk of intracranial hypertension.
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    Effects of isotretinoin on new bone formation after maxillary sutural expansion
    (Urban & Vogel, 2020) Bulut, Musa; Korkmaz, Yasemin Nur; Erimşah, Sevilay
    Purpose The aim of this study was to examine the effects of isotretinoin on new bone formation after maxillary sutural expansion in rats. Materials and methods A total of 32 maleWistar rats were selected and randomly divided into four groups. The isotretinoin group was treated with 7.5mg/kg isotretinoin, and the soybean group was treated with 2ml/kg soybean oil for 57 days. The substances were applied via oral gavage. The expansion-only and the control groups were not treated with any substance. In the experiment groups, expansion springs were applied on day 41 of the experiment, and after day 5 of expansion, a 12-day retention period was established. At the end of the experiment, all the animals were sacrificed, and their maxillae were dissected for histological evaluation. The numbers of osteoclasts, osteoblasts and formation of new bone and capillaries were evaluated on slides centered around the suture. Results The statistical analysis showed significant differences between the groups for the number of osteoblasts and osteoclasts (p< 0.001). In the experiment groups, higher numbers of osteoblasts and osteoclasts were detected in comparison to the control group (p< 0.001), while there was no significant difference between the experiment groups. Capillary formation and new bone formation in the isotretinoin group were found to be on a higher level than in the other groups (p< 0.001). Conclusion Isotretinoin had no negative effects on bone formation following the expansion of the maxillary suture in rats.
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    Effects of isotretinoin on new bone formation after maxillary sutural expansion
    (Urban & Vogel, 2021) Bulut, Musa; Korkmaz, Yasemin Nur; Erimşah, Sevilay
    Correction to: J Orofac Orthop (2020) 81:440–446 https://doi.org/10.1007/s00056-019-00209-2 The original version of this article unfortunately contained a mistake. The third bullet under the section Materials and Methods should read “Soybean oil (SOY) group: Soybean oil was administered via oral gavage (2 ml/kg) during the nursery period before expansion (an interval of 40 days), and during the expansion (period of 5 days) + retention period (period of 12 days—a total of 57 days)” instead of “Soybean oil (SOY) group: Soybean oil was administered via oral gavage (0.2 ml/kg) during the nursery period before expansion (an interval of 40 days), and during the expansion (period of 5 days) + retention period (period of 12 days—a total of 57 days)”.
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    Farklı Pekiştirme Aygıtları Kullanan Hastalarda Pekiştirme Dönemindeki Diş Renk Değişiminin İncelenmesi
    (2024) Tekin, Erdal; Bulut, Musa
    Amaç: Bu çalışmanın amacı, ortodontik tedavi sonrası nüksü önlemek için kullanılan farklı pekiştirme aygıtlarının, dişlerin renk değişimi üzerindeki etkilerini incelemektir. Gereç ve Yöntem: Sabit ortodontik tedavi gören 60 hasta 3 eşit gruba ayrıldı. Her bir gruba farklı bir pekiştirme aygıtı uy- gulandı (Grup 1: sabit retainer + vakumla şekillenen plak, Grup 2: sadece vakumla şekillenen plak ve Grup 3: Hawley apareyi). Üst kesici dişlerin labial yüzeylerinden braketler çıkartıldığın- da, pekiştirmenin birinci, üçüncü ve altıncı aylarında dijital bir spektrofotometre kullanılarak renk değerleri (CIE L*a*b*) öl- çüldü. Zamanlar arası renk değişiklikleri (?E) hesaplandı. Bulgular: Yapılan ölçümlere göre pekiştirme döneminde Hawley grubundaki hastalarda L* ve b* değeri azalmış, Essix ve Hawley grubundaki hastalarda ise a* değeri azalmıştır. Üç grubun ?E değerleri incelendiğinde klinik olarak kabul edile- bilir görünür renk değişiminin meydana geldiği belirlenmiştir fakat gruplar arasında istatistiksel olarak anlamlı bir fark yok- tur. Sonuçlar: Üç farklı pekiştirme aygıtı kullanan bireyler altı aylık pekiştirme dönemi boyunca klinik olarak kabul edilebilir renk değişikliği meydana gelmiştir. Kullanılan pekiştirme apareyleri arasında estetik açıdan klinik uygulamada bir fark yoktur.
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    Is hand-wrist radiography still necessary in orthodontic treatment planning?
    (Bmc, 2024) Bulut, Musa; Hezenci, Yasin
    Objectives The aim of our study is to compare the relationship between hand-wrist and cervical vertebra maturation stages with chronological age and to investigate the effect of malocclusion type on the relationship between these methods. Materials and methods Hand-wrist and cephalometric radiographs of 1000 patients (526 females, 474 males) with a mean age of 13.41 +/- 1.83 were analyzed. The methods of Bacetti et al. were used for the cervical vertebra maturation stage, and Bj & ouml;rk, Grave and Brown's methods were used for the hand-wrist maturation stage. One-way ANOVA test was applied to compare skeletal classes between them. Tukey post hoc test was used to determine the differences. The relationship between the malocclusion type, cervical vertebra and hand-wrist maturation stages was evaluated with the Spearman correlation test. Results Spearman's correlation coefficient was 0.831, 0.831 and 0.760 in Class I, II and III females, respectively. In males, it was calculated as 0.844, 0.889 and 0.906, respectively. When sex and malocclusion were not differentiated, the correlation was found to be 0.887. All were statistically significant (P < 0.001). The highest correlation was observed in class III males, while the lowest was found in class III females. Conclusion Cervical vertebrae can be used safely to assess pubertal spurt without hand-wrist radiography. Diagnosing growth and development stages from cephalometric images is important in reducing additional workload and preventing radiation risk.
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    Maksiller sutural genişletmede isotretinoinin yeni kemik oluşumuna etkisinin incelenmesi
    (Bolu Abant İzzet Baysal Üniversitesi, 2018) Bulut, Musa; Korkmaz, Yasemin Nur
    Akne vulgaris tedavisinde özellikle ergenlik ve genç erişkinlik dönemlerinde sıklıkla kullanılan bir ilaç olan isotretinoinin hiperosteoza sebep olduğunu belirtilse de uzun dönem kullanımda kemiklerde incelme ve demineralizasyon saptanmıştır. Bu çalışmanın amacı, isotretinoinin ratlarda maksiller sutural genişletme sırasında yeni kemik oluşumu üzerine olan etkilerini değerlendirmektir. Çalışmamızda 8 haftalık 32 adet erkek Wistar ratı kullanılmıştır. Ratlar isotretinoin, soya ve ekspansiyon grubu olarak 3 deney ve 1 kontrol grubu olacak şekilde rastgele 4 eşit gruba ayrılmıştır. İsotretinoin grubuna 57 gün boyunca 2ml/kg soya yağında çözünmüş 7,5 mg/kg isotretinoin oral gavaj yoluyla verilmiştir. Soya grubuna 57 gün boyunca 2ml/kg soya yağı oral gavaj yoluyla verilmiştir. Ekspansiyon grubuna deneyin ilk 40 gününde işlem yapılmamıştır. Tüm deney gruplarında 41. günde ekspansiyon işlemine başlanmış ve 5 günlük genişletmeden sonra 12 günlük retansiyon periyoduna geçilmiştir. Kontrol grubuna ise deney süresince hiçbir müdahalede bulunulmamıştır. 57 günlük deney süresi sonunda tüm ratlar sakrifiye edilmiş ve maksillalar disseke edilmiştir. Histolojik incelemede osteoblast ve osteoklast sayısı, damarlanma ve yeni kemik oluşum miktarı sutur çevresini merkeze alan kesitler üzerinde değerlendirilmiştir Osteoblast ve osteklast sayılarının gruplar arası karşılaştırılmasında Kruskal Wallis testi, post-hoc karşılaştırılması için Mann-Whitney U testi kullanılmıştır. Damarlanma ve yeni kemik oluşumu parametreleri yoğunluğu belirtecek şekilde skorlanarak, grupların skorları Fisher Exact test ile karşılaştırılmıştır. Osteoblast ve osteoklast değerleri 4 grup arasında istatistiksel olarak anlamlı farklılık göstermektedir (p<0.001). Her 3 deney grubunda, kontrol grubuna göre anlamlı seviyede daha fazla osteoblast ve osteoklast sayısı tespit edilmiştir (p<0.001), deney grupları arasında ise istatistiksel olarak anlamlı fark bulunmamıştır. Damarlanma ve yeni kemik oluşumu skorlarında, gruplar arasında anlamlı farklılık tespit edilmiştir (p<0.001). İsotretinoin grubunda damarlanma ve yeni kemik oluşumunun, diğer gruplara göre daha yüksek seviyede olduğu görülmüştür. İsotretinoinin, ratlarda maksiller sutural genişletmede negatif bir etkiye sahip olmadığı, aksine damarlanma ve yeni kemik oluşumunu artırdığı tespit edilmiştir. Anahtar kelimeler: Kemik oluşumu, Rat, Rme