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Questions and Answers
What is the difference between tissue level and bone level implants?
What is the difference between tissue level and bone level implants?
- Bone level implants are used in the maxilla while tissue level implants are used in the mandible
- Tissue level implants have a higher failure rate compared to bone level implants
- Bone level implants require a longer healing time compared to tissue level implants
- The neck of bone level implant is at the level of bone, while the neck of tissue level implant is moved 2-3 mm coronally near the gingival margin (correct)
What are the two options for obtaining fixed retention systems for fixed implant-supported prostheses?
What are the two options for obtaining fixed retention systems for fixed implant-supported prostheses?
- Casting or molding
- Direct embedding or indirect bonding
- Screw retaining or through cementation (correct)
- Welding or soldering
Which type of prosthesis is suitable for a partially edentulous patient in implant dentistry?
Which type of prosthesis is suitable for a partially edentulous patient in implant dentistry?
- Fixed retention system
- Tissue level implant
- Implant supported prosthesis (correct)
- Removable over denture
What are the components involved in fabricating a single implant-supported crown?
What are the components involved in fabricating a single implant-supported crown?
What is the recommended torque for inserting the abutment for a cement retained crown?
What is the recommended torque for inserting the abutment for a cement retained crown?
How often should a recall visit be scheduled for an implant-supported single crown?
How often should a recall visit be scheduled for an implant-supported single crown?
What should be monitored to ensure proper maintenance of an implant-supported single crown?
What should be monitored to ensure proper maintenance of an implant-supported single crown?
What should be checked during maintenance of an implant-retained overdenture?
What should be checked during maintenance of an implant-retained overdenture?
What should be done if traumatized gingiva is detected during maintenance of an implant-retained overdenture?
What should be done if traumatized gingiva is detected during maintenance of an implant-retained overdenture?
What is the recommended follow-up period after delivery of an implant-supported single crown?
What is the recommended follow-up period after delivery of an implant-supported single crown?
What is the purpose of probing gently during maintenance of implant-supported restorations?
What is the purpose of probing gently during maintenance of implant-supported restorations?
What should be evaluated on a routine basis for the occlusal status of an implant-supported crown?
What should be evaluated on a routine basis for the occlusal status of an implant-supported crown?
What is the purpose of standard abutments in dental implants?
What is the purpose of standard abutments in dental implants?
What is the main difference between screw-retained and cement-retained implant supported crowns?
What is the main difference between screw-retained and cement-retained implant supported crowns?
Why are cover screws used in dental implants?
Why are cover screws used in dental implants?
What is the purpose of custom abutments in dental implants?
What is the purpose of custom abutments in dental implants?
What issue was reported with the external hexagon configuration implant-abutment connection interface introduced by Branemark?
What issue was reported with the external hexagon configuration implant-abutment connection interface introduced by Branemark?
What was developed to address the issue of screw loosening associated with the external hexagon configuration implant-abutment connection interface?
What was developed to address the issue of screw loosening associated with the external hexagon configuration implant-abutment connection interface?
What are the two basic implant connection geometries?
What are the two basic implant connection geometries?
What type of connections can external connections have on the implant platform?
What type of connections can external connections have on the implant platform?
What is the purpose of internal connection design enhancements?
What is the purpose of internal connection design enhancements?
What are the three types of prosthetic platforms mentioned in the text?
What are the three types of prosthetic platforms mentioned in the text?
What is used to transfer 3D implant position and design the crown and abutment?
What is used to transfer 3D implant position and design the crown and abutment?
Which factor can impact the design of the crown and abutment?
Which factor can impact the design of the crown and abutment?
What defines the length of the abutment and influences the choice between screw-retained and cement-retained restorations?
What defines the length of the abutment and influences the choice between screw-retained and cement-retained restorations?
Which impression technique impacts the ease of removal and replacement of the impression copings?
Which impression technique impacts the ease of removal and replacement of the impression copings?
What is used to counteract screw loosening?
What is used to counteract screw loosening?
What is used to transfer 3D implant position and design the crown and abutment?
What is used to transfer 3D implant position and design the crown and abutment?
What is used to transfer 3D implant position and design the crown and abutment?
What is used to transfer 3D implant position and design the crown and abutment?
What is used to counteract screw loosening?
What is used to counteract screw loosening?
Which impression technique involves unscrewing the impression coping to remove the tray from the mouth?
Which impression technique involves unscrewing the impression coping to remove the tray from the mouth?
What type of abutment has a locator denture cap, male processing nylon locator abutment, and tissue depth for proper positioning and seating?
What type of abutment has a locator denture cap, male processing nylon locator abutment, and tissue depth for proper positioning and seating?
For which type of prostheses do gold abutments with custom-designed metal alloy framework and porcelain for esthetics and hygiene access work best?
For which type of prostheses do gold abutments with custom-designed metal alloy framework and porcelain for esthetics and hygiene access work best?
What is the minimum requirement for interarch space in standard abutments?
What is the minimum requirement for interarch space in standard abutments?
Which format is used by intraoral scanners to record the three-dimensional geometry of objects in the mouth?
Which format is used by intraoral scanners to record the three-dimensional geometry of objects in the mouth?
What is the correct torque for tightening Straumann abutments?
What is the correct torque for tightening Straumann abutments?
What should be checked through an x-ray when using bone-level open tray impression copings?
What should be checked through an x-ray when using bone-level open tray impression copings?
Which type of impression technique captures the implant's position and orientation with a scan body engaged to the implant and scanner?
Which type of impression technique captures the implant's position and orientation with a scan body engaged to the implant and scanner?
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Study Notes
- Impression copings remain embedded in the impression during the process of making a definitive cast
- In closed tray technique, copings stay attached to implants during impression retrieval and are placed back into impression with implant analogs
- Impression copings for bone-level open tray have a screw that attaches them to the implant, and an x-ray should be taken to check the correct seating
- Open tray impression technique involves unscrewing the impression coping to remove the tray from the mouth
- The closed tray concept includes a snap-on impression cap with a polymer cap, metal post, and metal screw
- Digital impression using intraoral scanners captures the implant's position and orientation with a scan body, which is engaged to the implant and scanner to take a direct optical impression
- Intraoral scanners use the open STL format and record the three-dimensional geometry of the object in the mouth
- Standard abutment requirements include a minimum interarch space, consistent implant angulation and position, and a distance between the gingival margin and implant platform of 2mm or less
- Custom abutment considerations include a distance between the gingival margin and implant platform more than 5mm, excessive implant angulation, patient's restoration needs, and for all screw-retained prostheses
- Prefabricated abutments like Synocta come with three units for cement-retained implant-supported crowns, and gold abutments have a custom-designed metal alloy framework with porcelain for esthetics and hygiene access
- CAD / CAM abutments have a locator denture cap, male processing nylon locator abutment, tissue depth, and abutment height to ensure proper positioning and seating
- Abutment seating requires positioning into the implant head, making sure the connection extension engages properly, and tightening the screw to the correct torque, which is 35 Ncm for Straumann abutments.
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