Minimally Invasive Dentistry Techniques Quiz
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Questions and Answers

What is the purpose of the Learning Goals mentioned in the text?

  • To mention indications for debonding prosthesis (correct)
  • To describe the advantages and disadvantages of every retrievability technique
  • To outline the predefined period of use for fixed dental constructions
  • To classify available techniques for prosthesis debonding

    • According to the text, what are the two main approaches observed in the second group of clinical situations?

  • Preserving the construction and sectioning
  • With preserving the construction
  • Without preserving the construction (correct)
  • Immediate removal after cementing

    • What is the average life duration of crowns according to literature data?

  • 11-12 years
  • 7-8 years (correct)
  • 5-6 years
  • 9-10 years

    • In which clinical situation does immediate removal of fixed prosthetic restorations usually occur?

    <p>When a mistake occurs during cementing</p> Signup and view all the answers

    What is the primary method mentioned for removing fixed dental constructions from cases where a mistake occurred during cementing?

    <p>Sectioning</p> Signup and view all the answers

    What is the main reason for removing fixed dental constructions immediately after cementing in some cases?

    <p>To correct a mistake made during cementing</p> Signup and view all the answers

    What are the two groups of clinical situations mentioned in the text?

    <p>Cases when due to a mistake, removal must be implemented immediately after cementing and when the cement has reached its maximal hardness qualities and strength potential</p> Signup and view all the answers

    What is emphasized as the average life duration in the text?

    <p>7-8 years</p> Signup and view all the answers

    What is stated about fixed dental constructions?

    <p>They possess a predefined period of use</p> Signup and view all the answers

    According to the text, what are the two main approaches observed in the second group of clinical situations?

    <p>With preserving the construction</p> Signup and view all the answers

    Which technique involves making a small access hole through the prosthesis?

    <p>Semi-conservative techniques with partial destruction of the restoration</p> Signup and view all the answers

    What is a possible method of disrupting the luting cement layer during restoration removal?

    <p>Sectioning with a diamond and/or tungsten-carbide bur</p> Signup and view all the answers

    What may be necessary to remove present-day adhesively bonded all-ceramic restorations?

    <p>Cut through the lingual surface</p> Signup and view all the answers

    What instrument may be used to insert into the groove on the surface of the restoration for removal?

    <p>Special Mitchell’s trimmers</p> Signup and view all the answers

    Which technique involves applying traction force on the prosthesis to break down the luting agent?

    <p>Semi-conservative techniques with partial destruction of the restoration</p> Signup and view all the answers

    What is used to reduce the tension on the tooth/core when removing restorations?

    <p>Christen-son Crown Remover trimmers</p> Signup and view all the answers

    What may render a restoration totally unusable during removal?

    <p>Cut through the lingual surface</p> Signup and view all the answers

    What breaks down the luting agent in semi-conservative techniques?

    <p>Traction force applied on the prosthesis</p> Signup and view all the answers

    Which technique involves inserting a crown spreader/lever in the groove made on the surface of the restoration for removal?

    <p>Destructive techniques with full destruction of the restoration</p> Signup and view all the answers

    What may be used as provisional restorations in semi-conservative techniques?

    <p>Composite materials</p> Signup and view all the answers

    What instruments may be developed for access through the hole made in semi-conservative techniques?

    <p>Special Mitchell’s trimmers</p> Signup and view all the answers

    What method can be combined with an ultrasound instrument for disrupting the luting cement layer?

    <p>Sectioning with a diamond and/or tungsten-carbide bur</p> Signup and view all the answers

    What technique involves using a water-soluble thermoplastic resin to remove temporarily and permanently fixed restorations?

    <p>Decementing with Richwill resin</p> Signup and view all the answers

    Which technique involves the application of lasers such as Er, Cr: YSGG 2780 nm for the safe removal of all ceramic restorations?

    <p>Laser technique</p> Signup and view all the answers

    What instrument type is manually compressed and released to deliver the impact force for removing restorations?

    <p>Spring loaded back-action remover</p> Signup and view all the answers

    What may be a disadvantage of using back-action instruments with a weight for restoration removal?

    <p>May cause discomfort and luxation of the periodontal ligament</p> Signup and view all the answers

    Which method is contraindicated in patients with Hepatitis B and herpes simplex, as well as in patients with cardiac pacemakers?

    <p>Ultrasonic technique</p> Signup and view all the answers

    Which technique allows the dentist to re-cement the construction after adjustments?

    <p>Semi-conservative techniques</p> Signup and view all the answers

    What is a potential disadvantage of using lasers for restoration removal?

    <p>Hazardous for hard and soft tissues if the tip is not positioned appropriately</p> Signup and view all the answers

    Which technique aims at breaking down the luting cement layer and allows for re-cementation of the restoration?

    <p>$\text{More conservative techniques}$</p> Signup and view all the answers

    What can be used to remove fixed dental constructions using special scalar tips without damaging the restoration?

    <p>Decementing with Richwill resin</p> Signup and view all the answers

    Which technique involves engaging the margins of the restoration with a tip attached to a shaft that has a sliding weight?

    <p>Back-action instruments with a weight</p> Signup and view all the answers

    Which technique allows for better directional control over the force delivered during restoration removal?

    <p>Spring loaded Semi-automatic remover</p> Signup and view all the answers

    Which technique is described as a time-consuming approach that may cause ceramic veneering fracture and damage to the pulp if profound water spray is not used?

    <p>Ultrasonic technique</p> Signup and view all the answers

    What are the indications for debonding prosthesis?

    <p>Mistake during cementing or when the cement has reached its maximal hardness qualities and strength potential</p> Signup and view all the answers

    How can available techniques for prosthesis debonding be classified?

    <p>With preserving the construction and without preserving the construction</p> Signup and view all the answers

    What is the average life duration of crowns according to literature data?

    <p>7-8 years</p> Signup and view all the answers

    What technique allows for re-cementation of the restoration after breaking down the luting agent?

    <p>Semi-conservative techniques</p> Signup and view all the answers

    What technique involves using a water-soluble thermoplastic resin to remove temporarily and permanently fixed restorations?

    <p>Thermoplastic resin technique</p> Signup and view all the answers

    What is the potential disadvantage of using lasers for restoration removal?

    <p>Ceramic veneering fracture and damage to the pulp</p> Signup and view all the answers

    What technique involves applying traction force on the prosthesis to break down the luting agent?

    <p>Traction technique</p> Signup and view all the answers

    What is the main reason for removing fixed dental constructions immediately after cementing in some cases?

    <p>Mistake during cementing</p> Signup and view all the answers

    What instrument may be used to insert into the groove on the surface of the restoration for removal?

    <p>Ultrasonic instrument</p> Signup and view all the answers

    What technique involves engaging the margins of the restoration with a tip attached to a shaft that has a sliding weight?

    <p>Back-action instrument with a weight</p> Signup and view all the answers

    What may be necessary to remove present-day adhesively bonded all-ceramic restorations?

    <p>Crown spreader/lever</p> Signup and view all the answers

    What is the purpose of the Learning Goals mentioned in the text?

    <p>To develop the ability to mention indications for debonding prosthesis, classify available techniques for prosthesis debonding, and mention the advantages and disadvantages of each technique</p> Signup and view all the answers

    What are the four main groups that the removal of a prosthetic construction is divided into?

    <p>Biological, Mechanical, Aesthetical, Cementing agent</p> Signup and view all the answers

    What is the potential disadvantage of using lasers for restoration removal?

    <p>Hazardous for hard and soft tissues if the tip is not positioned appropriately.</p> Signup and view all the answers

    What may be contraindicated in patients with Hepatitis B and herpes simplex, as well as in patients with cardiac pacemakers?

    <p>Ultrasound techniques</p> Signup and view all the answers

    What technique involves engaging the margins of the restoration with a tip attached to a shaft that has a sliding weight?

    <p>Back-action instruments with a weight</p> Signup and view all the answers

    What are the two main approaches observed in the second group of clinical situations?

    <p>Destructive and Conservative techniques</p> Signup and view all the answers

    What technique involves using a water-soluble thermoplastic resin to remove temporarily and permanently fixed restorations?

    <p>Decementing with Richwill resin</p> Signup and view all the answers

    What technique allows for the dentist to re-cement the construction after adjustments?

    <p>Semi-conservative techniques</p> Signup and view all the answers

    What is used to reduce the tension on the tooth/core when removing restorations?

    <p>Crown spreader/lever</p> Signup and view all the answers

    What may render a restoration totally unusable during removal?

    <p>Fractured porcelain</p> Signup and view all the answers

    Which technique involves making a small access hole through the prosthesis?

    <p>Semi-conservative techniques</p> Signup and view all the answers

    What may be used as provisional restorations in semi-conservative techniques?

    <p>Richwill resin</p> Signup and view all the answers

    What method can be combined with an ultrasound instrument for disrupting the luting cement layer?

    <p>Decementing with Richwill resin</p> Signup and view all the answers

    What instruments are developed for access through the hole made in semi-conservative techniques?

    <p>Different instruments</p> Signup and view all the answers

    What may render a restoration totally unusable during removal?

    <p>A cut through the lingual surface</p> Signup and view all the answers

    What technique involves making a small access hole through the prosthesis?

    <p>Semi-conservative techniques with partial destruction of the restoration</p> Signup and view all the answers

    What is emphasized as the average life duration in the text?

    <p>Average life duration of crowns</p> Signup and view all the answers

    What is the primary method mentioned for removing fixed dental constructions from cases where a mistake occurred during cementing?

    <p>Using a water-soluble thermoplastic resin</p> Signup and view all the answers

    What instrument type is manually compressed and released to deliver the impact force for removing restorations?

    <p>Christen-son Crown Remover trimmers</p> Signup and view all the answers

    Which technique involves engaging the margins of the restoration with a tip attached to a shaft that has a sliding weight?

    <p>Destructive techniques with full destruction of the restoration</p> Signup and view all the answers

    What technique involves the application of lasers such as Er, Cr: YSGG 2780 nm for the safe removal of all ceramic restorations?

    <p>Laser-assisted techniques</p> Signup and view all the answers

    Which technique allows for better directional control over the force delivered during restoration removal?

    <p>Semi-conservative techniques with partial destruction of the restoration</p> Signup and view all the answers

    What is used to reduce the tension on the tooth/core when removing restorations?

    <p>Crown spreader/lever or the special Mitchell’s trimmers</p> Signup and view all the answers

    What is the main reason for removing fixed dental constructions immediately after cementing in some cases?

    <p>To avoid damage to the pulp</p> Signup and view all the answers

    What method can be combined with an ultrasound instrument for disrupting the luting cement layer?

    <p>Sectioning with a diamond and/or tungsten-carbide bur</p> Signup and view all the answers

    The technique for removing prosthetic restorations using special scalar tips is called _______

    <p>Ultrasonic</p> Signup and view all the answers

    Richwill resin is a _______ used to remove temporarily and permanently fixed restorations

    <p>water-soluble thermoplastic resin</p> Signup and view all the answers

    Lasers such as Er, Cr: YSGG 2780 nm may be used for the safe removal of _______ restorations

    <p>all ceramic</p> Signup and view all the answers

    Back-action instruments with a weight are used for removing _______ restorations

    <p>temporarily cemented</p> Signup and view all the answers

    Back-action instruments with a weight may cause discomfort and _______ of the periodontal ligament

    <p>luxation</p> Signup and view all the answers

    Spring loaded semi-automatic removers have better _______ over the force delivered

    <p>directional control</p> Signup and view all the answers

    The primary method mentioned for removing fixed dental constructions from cases where a mistake occurred during cementing is _______

    <p>destructive techniques</p> Signup and view all the answers

    In some cases, Richwill resin may need _______

    <p>repetition</p> Signup and view all the answers

    Lasers are mainly used for debonding _______ restorations

    <p>all-ceramic</p> Signup and view all the answers

    Back-action instruments are mainly indicated for removing _______ restorations

    <p>temporarily cemented</p> Signup and view all the answers

    The success rate of Richwill resin method is 100% for removing _______ cemented restorations

    <p>temporarily</p> Signup and view all the answers

    Decementing with Richwill resin is contraindicated if the opposing tooth or the restoration are lacking _______

    <p>stability</p> Signup and view all the answers

    Fixed dental constructions possess a predefined period of use. Most often they are removed by means of ______ after which they are unusable.

    <p>sectioning</p> Signup and view all the answers

    Cases, when due to a mistake, removal must be implemented immediately after ______.

    <p>cementing</p> Signup and view all the answers

    According to literature data, the average life duration of crowns is ______ years.

    <p>7-8</p> Signup and view all the answers

    In the second group of clinical situations, we can observe two main approaches: 2.1. Without preserving the construction. 2.2. With preserving the ______.

    <p>construction</p> Signup and view all the answers

    What is the primary method mentioned for removing fixed dental constructions from cases where a mistake occurred during ______?

    <p>cementing</p> Signup and view all the answers

    Which technique involves making a small access hole through the prosthesis?

    <p>semi-conservative techniques</p> Signup and view all the answers

    What technique involves engaging the margins of the restoration with a tip attached to a shaft that has a sliding ______?

    <p>weight</p> Signup and view all the answers

    What may be necessary to remove present-day adhesively bonded all-ceramic ______?

    <p>restorations</p> Signup and view all the answers

    What is emphasized as the average life duration in the ______?

    <p>text</p> Signup and view all the answers

    What may render a restoration totally unusable during ______?

    <p>removal</p> Signup and view all the answers

    What are the two main approaches observed in the second group of clinical ______?

    <p>situations</p> Signup and view all the answers

    What can be used to remove fixed dental constructions using special scalar tips without damaging the ______?

    <p>restoration</p> Signup and view all the answers

    Semi-conservative techniques involve making a small access hole through the prosthesis. They are more convenient for patients, time-savers, force is inflicted less traumatically, restorations may be reused as provisional ones. The hole can be obturated using ______ materials.

    <p>composite</p> Signup and view all the answers

    Different instruments are developed for access through the hole made in semi-conservative techniques. The tooth is used as an anchor point, while the traction force is applied on the prosthesis. That breaks down the ______ agent.

    <p>luting</p> Signup and view all the answers

    Destructive techniques with full destruction of the restoration involve sectioning restorations with a diamond and/or tungsten-carbide bur. The technique can be combined with an ultrasound instrument to disrupt the ______ layer.

    <p>cement</p> Signup and view all the answers

    Present-day adhesively bonded all-ceramic restorations may be extremely difficult to remove. A cut through the lingual surface might be necessary as well which renders the restoration totally ______.

    <p>unusable</p> Signup and view all the answers

    Inserting a crown spreader/lever or the special Mitchell’s trimmers in the groove made on the surface of the restoration, using rotational moves split is spread evenly, and The rod may easily shift away from the long axis of the tooth ______ layer breaks down.

    <p>cement</p> Signup and view all the answers

    Other instruments are Christen-son Crown Remover trimmers. The crown spreads evenly, reducing the tension on the tooth/core when using levers and ______.

    <p>trimmers</p> Signup and view all the answers

    The technique of making a small access hole through the prosthesis is a part of the ______ techniques for restoration removal.

    <p>semi-conservative</p> Signup and view all the answers

    The method of applying traction force on the prosthesis to break down the luting agent is a characteristic of ______ techniques for restoration removal.

    <p>semi-conservative</p> Signup and view all the answers

    Destructive techniques with full destruction of the restoration often involve sectioning restorations with a diamond and/or ______ bur.

    <p>tungsten-carbide</p> Signup and view all the answers

    The technique of sectioning restorations with a diamond and/or tungsten-carbide bur can be combined with an ultrasound instrument to disrupt the ______ layer.

    <p>cement</p> Signup and view all the answers

    Present-day adhesively bonded all-ceramic restorations may be extremely difficult to remove, and a cut through the lingual surface might be necessary, rendering the restoration totally ______.

    <p>unusable</p> Signup and view all the answers

    Inserting a crown spreader/lever or the special Mitchell’s trimmers in the groove made on the surface of the restoration is a step in the removal process where the tooth/core tension is reduced and the ______ layer breaks down.

    <p>cement</p> Signup and view all the answers

    Study Notes

    Learning Goals

    • Serve to clarify objectives and expected outcomes for practice and study in dental prosthetics.

    Clinical Situations & Approaches

    • Two main approaches for the second group of clinical situations: preserving the construction and not preserving the construction.

    Crown Lifespan

    • Average lifespan of dental crowns ranges around 10 years according to literature data.

    Immediate Removal Situations

    • Immediate removal of fixed prosthetic restorations often occurs when a mistake was made during cementing.

    Methods for Removal

    • Primary method for removing fixed dental constructions from cementing errors involves breaking down the luting agent.
    • Semi-conservative techniques can include making small access holes for restoration removal.

    Reasons for Immediate Removal

    • Key reason for urgent removal post-cementing: restore proper function and safety when an issue is detected.

    Groups of Clinical Situations

    • The clinical situations are categorized primarily into two groups: those with the intention to preserve restorations and those without.

    Removal Techniques

    • Techniques range from conservative, allowing re-cementation, to destructive, requiring full removal and replacement.

    Tools and Instruments

    • Crown spreaders or levers can be used for marginal engagement during restoration removal.
    • Special scalers may also assist in removing dental constructions without causing damage.
    • Spring-loaded semi-automatic removers provide precise control over force applied in restorations removal.

    Temporary Restorations

    • Provisional restorations are possible using materials from semi-conservative techniques.

    Impact of Treatments

    • Laser techniques, such as Er, Cr: YSGG, are effective for removing all-ceramic restorations but can be time-consuming and may lead to fractures or damage if not managed properly.

    Contraindications

    • Use of certain instruments may be contraindicated in patients with Hepatitis B, herpes simplex, or cardiac pacemakers.

    Composite Applications

    • Richwill resin serves as a water-soluble thermoplastic material for temporary or permanent restoration removal.

    Disadvantages

    • Discomfort or harm to the periodontal ligament can arise from back-action instruments with weight.
    • Lasers, while effective, may have limitations and risks including comfort and procedural time.

    Semi-Conservative Techniques

    • Involves strategies like making a small access hole and applying less traumatic forces to reuse restorations.

    Destructive Techniques

    • Require full restoration sectioning and substantial breakdown of bonding layers, often with risks of making restorations unusable.

    Importance of Technique Selection

    • Decisions in restoration removal impact not only patient outcomes but also the longevity and usability of the dental constructions.

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    Description

    Test your knowledge of minimally invasive dentistry techniques with this quiz. Explore semi-conservative approaches with partial destruction of restorations, small access holes through prostheses, and the reuse of restorations as provisional ones.

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