Dental expo

Oxygen molecules which can negatively affect the bond strength between the tooth and restoration

🔹Application of neutral sodium fluoride for one minute,after the gel removal 🔹Removal of the gingival protection with a plier 🔹Immediate result after first session

🔹Gel removal with suction and moistened gauze. Do not rinse the gel off because this can remove the gingival protection. 🔹Application of a new layer of gel and activation with light source. 🔆Usually two applications are done in each session. وممكن نوصل ل4 applications 🔆عادة نسوي جلستين ع اقل بينهم ٣ ايام . 🔆ومرات نحتاج جلسة ثالثة خصوصا للكناين الي يكون اكثر تصبغ Occasionally, a third session can be scheduled to adjust the canines, which tend to be more saturated or even the lower teeth If the bleaching gel contacts the gingival tissue, a neutralizing solution can be applied

🔹Apply a layer of gel with a thickness of 2.0 mm on the vestibular surface of the teeth. مدة التفاعل لتركيز 35% من الهيدروجين بروكسايد 30-50 دقيقة If an activation source is used, the product can be applied for 15 minutes, interposing 3 minutes of light activation with the light device, and a 2-minute break

In office bleaching technique 🔹من المعروف اغلب المنتجات ومنها الهيدروجين بيروكسايد have a longer shelf life when stored in acidic medium; however, its efficacy is higher in alkaline medium. 🔆ف الحل شنو؟ سوو 2 syringes او two separate compartments وحدة بيها هيدروجين بيروكسايد بوسط حامظي فينحفظ لوقت اطول والاخرى thickener تكون بوسط قاعدي تخلي فعال اكثر When mixed, they form a very active gel, with high pH and optimal viscosity for application