Evaluation of the Effect of Light Application Techniques On Bracket-Composite Bond Strength

Kader Tatar; Saadet Çınarsoy Ciğerim; Hüseyin Melik Böyük; Gönül Dinç; Jamil Bayzed

Makale detayları

Evaluation of the Effect of Light Application Techniques On Bracket-Composite Bond Strength

Yazarlar:

Kader Tatar | Saadet Çınarsoy Ciğerim | Hüseyin Melik Böyük | Gönül Dinç | Jamil Bayzed

Yayıncı:

Van Yuzuncu Yıl University

Ana Başlıklar:

Ortodonti ve Dentofasiyal Ortopedi | Protez

Dergi:

Van Sağlık Bilimleri Dergisi Vol.17 Issue 2, pp.89-96

Belge Tipi:

Makale

Yayın Tarihi:

8/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001326102

pISSN:

2667-5072

Anahtar kelimeler:

Özet:

 Objective: The fixed orthodontic treatment approach relies on transmitting the desired forces to the teeth through brackets attached to them. The ability of orthodontic brackets to resist forces without detachment is crucial for achieving successful outcomes. The composites used in bonding brackets to teeth exhibit polymerization-related shrinkage and stress formation, adversely affecting bond strength. Our study aims to assess the effect of different application techniques of polymerization light sources on the bond strength between brackets and composites. Materials and Methods: For this study, premolar metal orthodontic brackets were embedded in acrylic blocks with the base portion positioned 1mm above. A 3mm high layer of an adhesive composite was applied to the bracket base surface. Polymerization was carried out using the LED light source with three available light application modes: P1 normal mode continuous and constant light emission, P4 pulse mode light applied intermittently at specific intervals, and P5 ramp mode starts with low light intensity and gradually increases over time, applied for 20 seconds. Thus, a total of 45 samples were prepared, with 15 samples for each of the three light application modes. All groups were incubated in distilled water at 37C for 24 hours. The values at the moment of rupture of the samples placed in the testing device were recorded to measure shear bond strength. The surfaces of the detached brackets were examined under a microscope, and the remaining composite amounts were scored according to the Adhesive Remnant Index ARI. Results: Statistical significance was observed in shear bond strength values among P1, P4, and P5 light application modes p0.011; p0.05. The values for P4 light mode were not statistically significant compared to P1 light mode p0.542; p0.05. The P5 ramp mode showed a higher bond strength value than the other two groups. In all three groups, more than 50 of the composite remained on the bracket surface, as examined by the Adhesive Remnant Index. Conclusion: The P5 ramp mode, with gradually increasing light intensity in the polymerization technique, provides a better connection between brackets and composites, preventing common bracket detachment in clinically fixed orthodontic treatments and ensuring more successful and sustainable outcomes.

 Objective: The fixed orthodontic treatment approach relies on transmitting the desired forces to the teeth through brackets attached to them. The ability of orthodontic brackets to resist forces without detachment is crucial for achieving successful outcomes. The composites used in bonding brackets to teeth exhibit polymerization-related shrinkage and stress formation, adversely affecting bond strength. Our study aims to assess the effect of different application techniques of polymerization light sources on the bond strength between brackets and composites. Materials and Methods: For this study, premolar metal orthodontic brackets were embedded in acrylic blocks with the base portion positioned 1mm above. A 3mm high layer of an adhesive composite was applied to the bracket base surface. Polymerization was carried out using the LED light source with three available light application modes: P1 normal mode continuous and constant light emission, P4 pulse mode light applied intermittently at specific intervals, and P5 ramp mode starts with low light intensity and gradually increases over time, applied for 20 seconds. Thus, a total of 45 samples were prepared, with 15 samples for each of the three light application modes. All groups were incubated in distilled water at 37C for 24 hours. The values at the moment of rupture of the samples placed in the testing device were recorded to measure shear bond strength. The surfaces of the detached brackets were examined under a microscope, and the remaining composite amounts were scored according to the Adhesive Remnant Index ARI. Results: Statistical significance was observed in shear bond strength values among P1, P4, and P5 light application modes p0.011; p0.05. The values for P4 light mode were not statistically significant compared to P1 light mode p0.542; p0.05. The P5 ramp mode showed a higher bond strength value than the other two groups. In all three groups, more than 50 of the composite remained on the bracket surface, as examined by the Adhesive Remnant Index. Conclusion: The P5 ramp mode, with gradually increasing light intensity in the polymerization technique, provides a better connection between brackets and composites, preventing common bracket detachment in clinically fixed orthodontic treatments and ensuring more successful and sustainable outcomes.

 Objective: The fixed orthodontic treatment approach relies on transmitting the desired forces to the teeth through brackets attached to them. The ability of orthodontic brackets to resist forces without detachment is crucial for achieving successful outcomes. The composites used in bonding brackets to teeth exhibit polymerization-related shrinkage and stress formation, adversely affecting bond strength. Our study aims to assess the effect of different application techniques of polymerization light sources on the bond strength between brackets and composites. Materials and Methods: For this study, premolar metal orthodontic brackets were embedded in acrylic blocks with the base portion positioned 1mm above. A 3mm high layer of an adhesive composite was applied to the bracket base surface. Polymerization was carried out using the LED light source with three available light application modes: P1 normal mode continuous and constant light emission, P4 pulse mode light applied intermittently at specific intervals, and P5 ramp mode starts with low light intensity and gradually increases over time, applied for 20 seconds. Thus, a total of 45 samples were prepared, with 15 samples for each of the three light application modes. All groups were incubated in distilled water at 37C for 24 hours. The values at the moment of rupture of the samples placed in the testing device were recorded to measure shear bond strength. The surfaces of the detached brackets were examined under a microscope, and the remaining composite amounts were scored according to the Adhesive Remnant Index ARI. Results: Statistical significance was observed in shear bond strength values among P1, P4, and P5 light application modes p0.011; p0.05. The values for P4 light mode were not statistically significant compared to P1 light mode p0.542; p0.05. The P5 ramp mode showed a higher bond strength value than the other two groups. In all three groups, more than 50 of the composite remained on the bracket surface, as examined by the Adhesive Remnant Index. Conclusion: The P5 ramp mode, with gradually increasing light intensity in the polymerization technique, provides a better connection between brackets and composites, preventing common bracket detachment in clinically fixed orthodontic treatments and ensuring more successful and sustainable outcomes.

 Amaç: Sabit ortodontik tedavi yaklaşımı, dişlere yapıştırılan braketler aracılığıyla tedavi için istenen kuvvetlerin dişlere iletilmesi esasına dayanır. Ortodontik braketlerin tedavi süresince maruz kalacağı kuvvetlere karşı kopmadan direnç göstermesi başarılı sonuçlar elde etmek açısından önemlidir. Braketlerin dişlere yapıştırılmasında kullanılan kompozitlerin polimerizasyona bağlı büzülme ve stres oluşumu bağlanma dayanımını olumsuz etkilemektedir. Çalışmamız, polimerizasyon ışık kaynağının farklı uygulama tekniklerini kullanarak braket ile kompozit arasındaki bağlanma dayanımına etkisini değerlendirmeyi amaçlamaktadır. Materyal ve Metot: Çalışma için premolar metal ortodontik braketler Leone 0, 0018slot, İtalya taban kısmı 1mm yukarıda kalacak şekilde akrilik bloklara gömülmüştür. Braket taban yüzeyine 3mm yükseklikte Transbond XT 3M Unitek Monrovia, CA, ABD yapıştırıcı kompozit yerleştirilmiştir. Polimerizasyon için LED Eighteeth CuringPen-E ışık kaynağının mevcut üç ışık uygulama modu; P1 normal mod sürekli ve sabit bir ışık yayma durumu, P4 pulse mod ışık, belirli aralıklarla kesintili uygulanır ve P5 ramp modu düşük bir ışık şiddetiyle başlar ve zamanla bu şiddeti artar seçilerek 20 saniye boyunca ışık uygulanmıştır. Böylece bu üç ışık uygulama modunda 15er örnek olmak üzere toplamda 45 örnek hazırlanmıştır. Tüm gruplar 24 saat 37Cde distile suda etüvde bekletilmiştir. Kesme bağlanım kuvvetlerini ölçmek için test cihazına Bisco, Inc. Schaumburg, A.B.D yerleştirilen örneklerin kopma anındaki değerleri kaydedilmiştir. Kopan braketlerin yüzeyi bir mikroskop Mitutoyo, Japonya altında incelenerek Artık Adeziv İndeksine AAİ göre kalan kompozit miktarları skorlanmıştır. Bulgular: P1, P4 ve P5 ışık uygulama modlarında kesme bağlanma kuvvetleri arasında istatistiksel olarak anlamlı farklılık saptanmıştır p0,011; p0,05. P1 ışık moduna göre P4 ışık modu değerleri istatistiksel olarak anlamlı bulunmamıştır p0,542; p0,05. P5 ramp modu diğer iki gruptan daha yüksek bağlanma değeri göstermiştir. Adeziv Artık İndeksine göre incelen braket yüzeylerinde her üç grupta da kompozitin 50 sinden fazlası braket yüzeyinde kalmıştır. Sonuç: P5 ramp modu ışık şiddetinin giderek arttığı polimerizasyon tekniğinde braket-kompozit arasında daha iyi bir bağlantı sağlanması ile klinik olarak sabit ortodontik tedavilerde sık karşılaşılan braketlerin kopmasının önüne geçilerek daha başarılı tedaviler sürdürülebilir.

Makale detayları

Evaluation of the Effect of Light Application Techniques On Bracket-Composite Bond Strength

Yazarlar:

Kader Tatar | Saadet Çınarsoy Ciğerim | Hüseyin Melik Böyük | Gönül Dinç | Jamil Bayzed

Yayıncı:

Van Yuzuncu Yıl University

Ana Başlıklar:

Ortodonti ve Dentofasiyal Ortopedi | Protez

Dergi:

Van Sağlık Bilimleri Dergisi Vol.17 Issue 2, pp.89-96

Belge Tipi:

Makale

Yayın Tarihi:

8/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001326102

pISSN:

2667-5072

Orthodontic Bracket

Composite Resin

Polymerization ShrinkageOrtodontik Braket

Kompozit Rezin

Polimerizasyon Büzülmesi

Sayı

Makale detayları

Evaluation of the Effect of Light Application Techniques On Bracket-Composite Bond Strength

Yazarlar: Kader Tatar | Saadet Çınarsoy Ciğerim | Hüseyin Melik Böyük | Gönül Dinç | Jamil Bayzed

Yayıncı: Van Yuzuncu Yıl University

Ana Başlıklar: Ortodonti ve Dentofasiyal Ortopedi | Protez

Dergi: Van Sağlık Bilimleri Dergisi Vol.17 Issue 2, pp.89-96

Belge Tipi: Makale

Yayın Tarihi: 8/2024

Belge Dili: Türkçe

Document ID (Org No.): 2001326102

pISSN: 2667-5072

Orthodontic Bracket

Composite Resin

Polymerization ShrinkageOrtodontik Braket

Kompozit Rezin

Polimerizasyon Büzülmesi

Sayı

Yazarlar:

Kader Tatar | Saadet Çınarsoy Ciğerim | Hüseyin Melik Böyük | Gönül Dinç | Jamil Bayzed

Yayıncı:

Van Yuzuncu Yıl University

Ana Başlıklar:

Ortodonti ve Dentofasiyal Ortopedi | Protez

Dergi:

Van Sağlık Bilimleri Dergisi Vol.17 Issue 2, pp.89-96

Belge Tipi:

Makale

Yayın Tarihi:

8/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001326102

pISSN:

2667-5072