Dental Space

حبيبي صاحب القناة RIDAH , ساعتين د اكتب بيها مو مال هيجي تاخذها 😂😂😂 ع الاقل سوي تحويل

♦️C-factor هي القيمة الي نحصل عليها وقت نقسم عدد الأسطح المرتبطة / ع عدد الأسطح المو مرتبطة (حرة) C- factor = bonded surface / unbounded surface 📍بشكل عام نحن عندنا ست اسطح لسن الي هي :- 1. Occlusal or incisal edge surface 2. Mesial surface 3. Distal surface 4. Labial or buccal surface 5. Palatial or lingual surface 6. The floor surface 📌ف مثلا 1. Class I Cavity: • Bonded surfaces: Mesial, Distal, Buccal, Lingual, Floor = 5 • Unbonded surface: Occlusal = 1 • C-factor = 5 / 1 = 5 ➜ أعلى قيمة 2. Class VI Cavity: • Bonded surface: فقط سطح واحد ( floor) • Unbonded: باقي الأسطح = 5 • C-factor = 1 / 5 = 0.2 ➜ أقل قيمة 📈اعلى قيمة لـ c-factor هي لـ كلاس I و كلاس V و الي تساوي 5 📉اقل قيمة هي لـ كلاس VI و الي هي 0,2 🔷كلما جان الرقم چبير ف هو غير مرغوب لانه يسبب اعلى احتمالية ل Polymerization shrinkage (high stress)

♦️In Laser Safety 1. Nd : YAG laser = we use green glasses 👓 🟢 2. Argon laser = we use amber glasses 👓 🟠 3. CO2 laser = we use clear glasses 👓 ⚪️

خيار B مكتوب adequate مو inadequate ركزوا و انتوا تقرون الاسئلة خاصة الكيسات

Case -5- 56. A 24-year-old patient undergoes cavity preparation using a high-speed turbine. Despite using intermittent cutting, pulpal inflammation is later noted. Which of the following most likely contributed to pulpal injury in this scenario? a. Use of tungsten carbide burs with crosscut flutes b. Adequate water coolant during preparation c. Minimal heat generation due to low pressure d. Disruption of odontoblastic tight junctions e. Conservative preparation depth preserving >2mm of dentin

مجموعة اسئلة عن محاضرة pulpal health

Case -4- A 37-year-old female presents complaining of food impaction between her upper left molars following a Class II composite restoration done two weeks ago on tooth #15. She reports difficulty flossing and mild gum bleeding in that area. On clinical exam, floss shreds between #15 and #14, and radiographs confirm a distal overhang on the restoration of #15. Gingiva is inflamed in the interproximal area. Which of the following is the MOST appropriate initial approach to manage this case? A. Redo the entire composite restoration using a new matrix system B. Use a surgical blade to access and remove the overhanging excess C. Employ abrasive finishing strips threaded below the contact point to remove the overhang without damaging the contact D. Use a high-speed diamond bur interproximally to quickly trim the excess composite E. Prescribe chlorhexidine mouthwash and monitor the patient for 2 weeks

Types of rubber dams frame :- 1. Type A ( Young’s frame ) - it is U shaped - made of metal - it might interfere with the x-ray , it should be removed before taking the x-ray 2. Type B ( Starvisi frame) - it is U shaped - made from radiolucent plastic & nylon materials -It is regarded as a suitable substitute for Young’s frame 3. Type C (Nygard Ostby frame) - is made from radiolucent plastic & nylon materials - can be left inside the patient’s mouth while taking x- ray #4th_stage #operative

سؤال هذا أرشحه يجي ..

قناة خاصة بالطلاب يجمعون بيها كل ملاحظات المواد الوزارية :- https://t.me/lectuurr24

Difference between files and reamers #4th_stage #operative

♦️بالنسبة لكوزات راح نبدي ننشر مجموعة ساعة 6:00 PM م/ كوزات بارحة بالقناة مثبتة تكدر ترجع عليهم و تحلهم

🔹The site of each Non-caries lesion :- 1- Attrition , Site: - The incisal, occlusal, and proximal surfaces of teeth 2 - Abrasion , Site: - Neck of the labial surface of anterior teeth. -Neck of the buccal surface of posterior teeth 3- Erosion , Site: - Labial and lingual surface of teeth. 4- Abfraction , Site: - Cervical region of teeth.