Quiz 1 - Exam 1 Flashcards
(32 cards)
What is the branch of dentistry concerned with the morphology, physiology and pathology of the human dental pulp and periradicular tissues. Its study and practice encompass the basic and clinical sciences including the biology of the normal pulp and the etiology, diagnosis, prevention and treatment of diseases and injuries of the pulp and associated periradicular conditions?
Endodontics
Parts of tooth anatomy?
- Slide 14 of 3rd lecture.
What are the 6 main procedures in endodontics?
- Conventional Root Canal Therapy
- Non-Surgical Retreatment
- Surgical Retreatment
- Vital Pulp Therapy
- Traumatic Injuries
- Regenerative Endodontic Therapy
What form is used to judge the difficulty of a root canal procedure?
AAE Case Difficulty Assessment Form
What are the three main types of Hand Files, what are their shape, what are they made of? Which of these is not meant to be twisted, but can only be used in a Filing or Rasping motion? Which of this is only meant to be used with a twist and not a pulling motion? What Hand File has spiked edges to pull out the pulp or withdraw cotton from a previous operation? What Hand File can be useful in applying liquids such as CaOH, Cements, Sealers and Pastes?
- K-File: Square, SS and NiTi
- Reamer: Triangle, SS and some NiTi
- Headstrom File: Circle/Tear-drop, SS
- Headstrom
- Reamer
- Barbed Broach
- Lentulo Spiral
Tools for endo?
Notes
What is the most common Rotary File used in Endo? What are the different measurements of GG files from smallest to larges?
- Gates Glidden
- 0.50, 0.70, 0.90, 1.10, 1.30, 1.50
What is an advantage of SS? What is an advantage of NiTi?
- SS: Will not bend / rigid
- NiTi: Will bend / form
File size was standardized by who? What color is a # file (6,8,10) on the D0 diameter? The rest are on a standardized color system that has one color for multiple numbers. What color is a # file (14,45,90) on the D0 diameter? What color is a # file (20,50,100) on the D0 diameter? What color is a # file (25,55,110) on the D0 diameter? What color is a # file (30,60,120) on the D0 diameter? What color is a # file (35,70,130) on the D0 diameter? What color is a # file (40,80,140) on the D0 diameter?
- Dr. John Ingle
- 6: Pink (0.06 mm DO)
- 8: Silver (0.08 mm DO)
- 10: Purple/Violet (0.10 mm DO)
- 14,45,90: White (0.14,0.45,0.90 mm DO)
- 20,50,100: Yellow (0.20, 0.50, 1.00 mm DO)
- 25,55,110: Red (0.25, 0.55, 1.10 mm DO)
- 30,60,120: Blue (0.30, 0.60, 1.20 mm DO)
- 35,70,130: Green (0.35, 0.70, 1.30 mm DO)
- 40,80,140: Black (0.40, 0.80, 1.40 mm DO)
Where is the D0/D1 measurement on a file? Where is the D16/D2 measurement on a file? What is the formula from preceding from a D0/D1 measurement to a D16/D2 measurement? Distance from D0/D1 to D16/D2? D0/D1 to handle?
- D0/D1: At the end tip of the file.
- D16/D2: Where the cutting edge begins.
- Formula: D0/D1 + 0.32 mm = D16/D2
(Examples: - D0/D1: 0.06 mm = D16/D2: 0.38 mm
- D0/D1: 0.15 mm = D16/D2: 0.47 mm
- D0/D1: 0.45 mm = D16/D2: 0.77 mm
- D0/D1: 0.90 mm = D16/D2: 1.22 mm
- D0/D1: 1.40 mm = D16/D2: 1.72 mm)
- D0/D1 to D16/D2: 16 mm
- D0/D1 to handle: 25 mm
What are the two tip types? What are the grooves to catch debris between cutting edges? What is a surface projecting axially from the central axis between flutes?
- Tip: Cutting and Non-cutting
- Flute
- Land
What four things are files used for?
- Canal Negotiation
- Canal Debridement
- Length Determination
- Canal Shaping
What is the filling of the pulp canal with material called?
- Obturation
When accessing the pulp chamber, what is the shape of the access in accordance with the anteriors (incisors and canines), premolars (bicuspids), maxillary molars and mandibular molars?
- Anteriors (incisors and canines): Ovoid/Oval
- Premolars (bicuspids): Ovoid/Oval
- Maxillary molars: Triangular
- Mandibular molars: Rhomboid
What is the Law of Centrality?
- The pulp chamber of the tooth is always located in the center of the tooth at the level of the CEJ.
What is the Law of Concentricity?
- The outline of the pulp chamber of a tooth is concentric to the outer boarder of the tooth at the level of the CEJ.
What is the First rule of Symmetry?
- The orifices of the pulp chamber are symmetrical with respect to a line drawn in a mesial/distal direction at the level of the CEJ.
What is the Second rule of Symmetry?
- The orifices of the pulp chamber are symmetrical with respect to each other.
What is the Law of color change?
- The pulp chamber floor is usually darker than the surrounding walls.
What is the First rule of the Orifice?
- The orifices of the floor of a pulp chamber are always located at the junction of the dark floor and the lighter walls.
What is the Second rule of the Orifice?
- The orifices of a pulp chamber are usually located at the vertex of a floor angle.
Are roots and canals the same thing?
- No, a single root may have multiple canals within it.
What type of burs can be used to access the pulp chamber?
- Carbide, high-speed: 330, 331
- Diamond: Round
- Specialty Burs: Endo-Z FG, Mueller burs (only once pulp is found)
What shape should the access cut be in an max. incisor, how many roots and how many canals? Mand. incisor?
- Max. incisor: Younger (triangular), adult (ovoid). Single root with a single canal.
- Mand. incisor: Younger (triangular), adult (ovoid). Single root with a 40% chance of two canals. **(Mand. incisors are the most difficult to access cavities.)
