🌹‏إِنَّ رَبِّي لَسَمِيعُ الدُّعَاءِ🌹

خطوات تركيبات الاسنان الخلفية وانواع البيرات المستخدمة لتغليف الاسنان بمادة ال PFM او الزيركون --------------------------- احنا متفقين ان التركيبات الثابتة Crown &Bridge تعتمد على طريقة تحضير الضرس قبل اعتمادها على الQuality بعد ماتأكدت ان الضرس Indicated لل FULL CROWN PREPARATION: سنقوم بعمل 6 خطوات اساسية مهمة مهما كان نوع التركيب PFM..Zircon وعلاش فكنا منهم 6 هلبه ؟ لانها سبب رئيسي فى نجاح التركيبة واطالة عمرها متفقين .. تمام ^^ STEP NO : 1 The occlusal reduction should follow the configuration of the geometric inclines that make the occlusal surface of any posterior teeth. .هنا نقوم بوضع علامات على كل الCusps وكدلك ال grooves باستخدام Tapred RE مقدار ال Reduction ..حوالى 1/2 ال bur -------------------------- STEP NO : 2 Functional cusp bevel with round-end tapered diamond. Failure to place this bevel can produce thin casting or poor morphology. .خطوة مهمة لاعطاء ال Space الكافية من ناحية ال buccal بواسطة Tapred RE ومهمة من ناحية ال Esthatic ايضا -------------------------- STEP NO : 3 Buccal and lingual walls are reduced 0.5 with the round-end tapered diamond.The sides of the diamond will produce the desired axial reduction while the tip forms the chamfer finish line. .هنا نقوم بالبرد تقريبا 1/2 ال Diamond bur فى الغالب 0.5 زاوية البرد peripendicular --------------------- STEP NO : 4 Initial proximal axial reduction with short needle diamond followed by the round-end tapered diamond. .هنا حنبدا بال Needle bur 0 لان المسافة صعبة وضيقة ونتفادى انه انسبب Damage للاسنان المجاورة تم خنختم بال Tapred RE -------------------------- STEP NO : 5 Seating a groove to increase the retention. .هنا نقلل من الانحناءات خاصة على السطح ليزداد الثبات اكثر -------------------------- STEP NO : 6 Axial finishing- round-end tapered diamond. All axial surfaces are smoothed including all point angles. The finish line should be smooth and continuous لابد من تنعيم الضرس وحندير Roundation لل Sharp angels من الاعلى لغاية ال Finish --------------------------- ملاحظة .. لو اعتمدنا على ال Tapred RE يمكن الحصول على ال Chamfer F.L اما لو اعتمدنا على ال Tapred Flat E يمكن الحصول على ال Shoulder F ---------------------------

All ceramic restoration راح نتعرف عليه من أكثر من ناحية 🔴طيب شو هو وايش يستخدم وايش خصائصه وكيف بيتم تصنيعه وايش ال advantages & disadvantages بتاعته⏬⏬ 🔴Definition\ ⏩porcelain backed on ceramic crystalline core. 🔴طيب لايش يستخدم ⬅بنستخدمه لكل الاسنان " anterior and posterior". 🔴طيب شو اللي بميزه ⬅بيعطينا good strength , ideal esthetic زي ما انتو شايفين بالصور 🔴اها طيب خلينا نشوف كيف بيتصنع " processing techniques" ⬅عنا أكثر من طريقة لل fabrication / ▶▶sintering ▶▶heat pressing" inceram and impress" ▶▶slip casting ▶▶CAD/CAM 🔴طيب خلينا نشوف المميزات بتاعته" advantages"/ ▶▶biocompatibility يعني بيسببش ضرر لل tissue يعني مش toxic يعني فش harmful effect. ▶▶superior esthetic جمالي جدا لانه لا يحتوي على metal.يعني ▶▶superior hardness and wear resistence يعني مش سهل يصيرلو fracture مع الاستخدام. ▶▶many forms يعني بنقدر نصنعه عاكتر من شكل ممكن inlay أو onlay أو crown. 🔴بعد ما شفنا هالميزات الحلوة خلينا نتعرف على بعض عيوبه " disadvantages"/ ▶▶high cost غالي جدا لان المواد اللي بتستخدم في تصنيعه غالية وكمان الأجهزة غالية جدا. ▶▶excissive reduction need. ▶▶most systems are not suitable for constructing long span bridge. يعني في حالة ال bridge فترة حياته قصيرة

مــلــخــص #CROWNـBRIDGE ➖Definitions : Crown and Bridge :It's a branch of dental science that deals with restoration of damaged teeth With artificial crown And replacing the missing natural teeth by Fixed prosthesis ➖Crown : It's A fixed Artificial restoration of the coronal Portion Of a natural tooth .It must restore The morphology ,contour And The function of the tooth And should protect the remaining tooth Structures from farther damage . ➖Bridge : It's a fixed prosthesis constructed to replace the missing [one or more ]teeth. The tooth that gives support to the Bridge is called an abutment tooth. ◼Components of the bridge: ➖Retainer: It's the part that Covers the abutment tooth Which could be major or minor . ➖Pontic : It's the part Of the Bridge that replaces the missing tooth ,Which is The suspended part of the Bridge .It Occupies the position Of the missing natural tooth ➖Connector : It is the part that Connects The retainer To the pontic, Which could be fixed or movable connector ◼Purposes Of crown Construction: 1-To restore the grossly damaged tooth, fractured tooth or a tooth With a heavy filling [amalgam or composite]. 2-To restore the masticatory function and speech 3-To restore the esthetic [Improve the patients appearance]. 4-To maintain the periodontal health By recontouring The occlusion And prevents food impaction. 5-As a retainer for the bridge . ◼Types of crowns : ➖Complete crown : It is the crown that covers all the coronal portion of the tooth ,Such as full metal crown ,Jacket crown which is a complete crown made of Plastic material. ➖Partial Crown : It is a crown That covers part of the coronal portion of the tooth such as 3/4 Crown . ➖Post crown: Crown with complete replacement of the coronal portion Of the tooth. This type of crown retains itself by means of a post extended inside the root canal of the tooth. ◼Steps in crown construction: 1➖Diagnosis : The first step should be diagnosis of the tooth and Surrounding Structures . a). Periodontal Examination : Proper oral hygiene Should be available to ensure that no plaque accumulation is formed on the crown margins which might lead if left to caries . B: Dental Examination: (i) Visual : The occlusion, Crowding ,Spacing ,Rotation of teeth are examined The condition of remaining tooth Structure and future treatment is also analyzed . (ii) Radiographic: The radiographic film reveals the condition and shape of the roots and surrounding structures, A lesion In the bone ,Root canal treatment ,Fracture in the tooth ,bone Loss , unerupted teeth , Size and number of teeth etc….These Information's Affects the prognosis Of the treatment . 2➖Tooth Preparation : It is the cutting or instrumentation of the abutment tooth to be in a form to seat a crown on it. Prepared tooth : It's the final form of a tooth after cutting (Preparation )procedure 3➖Final impression. 4➖Temporary restoration (Crown ). 5➖Construction of working model . 6➖Waxing. 7➖Investing. 8➖Wax Elimination . 9➖Casting . 10➖Finishing and polishing. 11➖Cementation Of the restoration. ◼Disadvantages Of crowns:- 1-Heat generation due to preparation of the teeth , this heat generation might affect the health of the pulp. 2-Periodontal problems ,food Impaction , and secondary caries might develop. 3-Over preparation can cause pulp irritation which might lead to death of the pulp, Therefore water coolant must be used during preparation procedure. Excessive tooth preparation can also weaken tooth structure . ◼Objectives of tooth Preparation:- 1-To eliminate undercuts from the axial surface Of the tooth . 2-To provide enough space for the crown restoration to withstand the force of mastication, This space depends on the material used ,So the metal material needs little space while the plastic material needs more space .

#Biologicـwidth Biologic width is the natural distance between the gingival sulcus (G) and the height of the alveolar bone (I). The gingival sulcus (G) is a little crevice that lies between the enamel of the tooth crown and the sulcular epithelium. At the base of this crevice lies the junctional epithelium, which adheres via hemidesmosomes to the surface of the tooth, and from the base of the crevice to the height of the alveolar bone (C) is approximately 2 mm. Biologic width is the distance established by "the junctional epithelium and connective tissue attachment to the root surface" of a tooth. In other words, it is the height between the deepest point of the gingival sulcus and the alveolar bone crest. This distance is important to consider when fabricating dental restorations, because they must respect the natural architecture of the gingival attachment if harmful consequences are to be avoided. The biologic width is patient specific and may vary anywhere from 0.75-4.3 mm. Based on the 1961 paper by Gargiulo, the mean biologic width was determined to be 2.04 mm, of which 1.07 mm is occupied by the connective tissue attachment and another approximate 0.97 mm is occupied by the junctional epithelium. Because it is impossible to perfectly restore a tooth to the precise coronal edge of the junctional epithelium, it is often recommended to remove enough bone to have 3mm between the restorative margin and the crest of alveolar bone. When restorations do not take these considerations into account and violate biologic width, three things tend to occur: chronic pain chronic inflammation of the gingiva unpredictable loss of alveolar bone

Laminate Veneers ... بالفيديو : كيفية عمل القشور وتحضيرها وأخذ طبعتها بشكل صحيح

Resin bonded retainer

how is a dental bridge made?

Dental Bridges

4 Options to Replace a Tooth

Porcelain Crowns and Bridges

★intracoronal(inlay.onlay)

5 foods causes tooth discoloured

Burs

Shade guide(colour selection)

★intracoronal(inlay.onlay)

Temporary filling

Fixed prosthodontics

Q/ᴡʜᴀᴛ ɪs ᴅɪғғᴇʀᴇɴᴄᴇ ʙᴇᴛᴡᴇᴇɴ ᴄʀᴏᴡɴ ᴀɴᴅ ᴠᴇɴᴇᴇʀ? -Veneers and crowns are both dental restoration methods that can improve the look and function of your teeth. The main difference is that a veneer covers only the front of your tooth and a crown covers the entire tooth. Veneer = Hollywood smile 💥

#معلومة non .setting calicium hydroxide يوضع فقط بعد تنشيق القنوات المتقيحه .. وبين جلسات الاندو ..وهو الدايكل الاصفر ...ونوضع فوقه قطنه وحشوة بولي كاربوكسيلات مؤقته

it is essential that preparation is carried out with copious water cooling, sharp burs and gentle techniques to limit potential damage to the pulp. 🔴Reference Planning and MakingCrowns and Bridges Fourth Edition Bernard GN Smith Leslie C Howe