{"id":3846,"date":"2023-01-12T10:25:19","date_gmt":"2023-01-12T09:25:19","guid":{"rendered":"https:\/\/magazine.zhermack.com\/?p=3846"},"modified":"2023-01-12T14:28:06","modified_gmt":"2023-01-12T13:28:06","slug":"preparing-temporary-restorations-from-impressions","status":"publish","type":"post","link":"https:\/\/magazine.zhermack.com\/en\/studio-en\/preparing-temporary-restorations-from-impressions\/","title":{"rendered":"Preparing temporary restorations from impressions\u00a0"},"content":{"rendered":"\n

A temporary restoration is a temporary device made to improve the aesthetics, stability and function of a tooth. It is used between the preparation of the tooth and the placement of the permanent restoration.[1]<\/a> <\/sup><\/p>\n\n\n\n

There are three main techniques for making temporary<\/a> restorations: direct, pre-filling indirect and post-filling indirect. <\/p>\n\n\n\n

Of the various direct techniques, the most commonly used is that in which the temporary restoration is fabricated using an impression.[2]<\/a><\/sup><\/p>\n\n\n\n

Characteristics, benefits and disadvantages  <\/h2>\n\n\n\n

The technique of preparing a temporary restoration using an impression is an extremely useful and practical one, as it makes it possible to fabricate the patient\u2019s temporary restoration at the chairside<\/strong>, without having to make further appointments. This technique also eliminates a laboratory step <\/strong>and the consequent costs, and therefore saves both time and money. <\/p>\n\n\n\n

When carried out properly, it is a technique that enables the <\/strong>fabrication of accurate temporary restorations<\/strong>, with good marginal precision, that do not require relining or many occlusal corrections before they can be cemented. <\/p>\n\n\n\n

It should also be pointed out that it is a technique that can only be carried out in clinical cases in which the tooth to be restored<\/strong>, initially (before the preparation phase), has a correct coronal morphology<\/strong> and in which there are no intermediate (pontic) teeth, as in the case of a bridge. <\/p>\n\n\n\n

In addition, as the technique involves fabricating the temporary restoration directly on the patient\u2019s tooth stump(s), it brings certain disadvantages such as greater exposure <\/strong>of the prepared tooth to potential traumas due to the increase in the temperature of the resin <\/strong>or the release of free monomer (if present in material used).  <\/p>\n\n\n\n

It is therefore necessary to choose the most appropriate material, preferring materials with limited exothermic reactions<\/strong> and that do not contain potentially-irritating free monomers. <\/p>\n\n\n\n

The procedure for preparing temporary restorations at the chairside <\/h3>\n\n\n\n

We will now focus on the procedural clinical sequence of this technique<\/strong> (2).  <\/p>\n\n\n\n

    \n
  1. Take the preliminary silicone impression. <\/li>\n\n\n\n
  2. Remove any undercuts from the impression to allow proper repositioning. <\/li>\n\n\n\n
  3. Prepare the stump or stumps. <\/li>\n\n\n\n
  4. Isolate the area of interest using glycerin. <\/li>\n\n\n\n
  5. Place the resin inside the impression. <\/li>\n\n\n\n
  6. Reposition the impression. <\/li>\n\n\n\n
  7. While the resin starts to show a plastic behaviour, remove any excess and check that there are no undercuts by repeatedly removing and repositioning the temporary restoration with the impression. <\/li>\n\n\n\n
  8. Wait for complete curing. <\/li>\n\n\n\n
  9. Remove the temporary restoration from the impression. <\/li>\n\n\n\n
  10. Immerse the temporary restoration in hot water for 5 minutes to complete curing. <\/li>\n\n\n\n
  11. Finish the temporary restoration. <\/li>\n\n\n\n
  12. Clean the stump. <\/li>\n\n\n\n
  13. Cement the temporary restoration.<\/li>\n<\/ol>\n\n\n\n

    Closing comments <\/h4>\n\n\n\n

    The technique of fabricating a temporary restoration using an impression brings a number of advantages, including the possibility of not having to involve a dental laboratory for the intermediate processing steps, thus shortening the overall time needed to complete the work, and doing away with the need for a series of practice appointments.  <\/p>\n\n\n\n

    Choosing the right material is therefore fundamental for avoiding complications<\/strong>.\u00a0<\/p>\n\n\n\n

    \n\n\n\n

    References<\/strong> <\/p>\n\n\n\n

    [1]<\/sup> The Glossary of Prosthodontic Terms: Ninth Edition. J Prosthet Dent. 2017 May; 117(5S):e1-e105. DOI: 10.1016\/j.prosdent.2016.12.001. PMID: 28418832 <\/em><\/p>\n\n\n\n

    [2]<\/sup> Garg, P., Ravi, R., & Ghalaut, P. (2021). Outcome of Provisional Restorations on Basis of Materials and Techniques of Choice: A Systematic Review. Restoration, 3(1), 6-15. <\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

    A temporary restoration is a temporary device made to improve the aesthetics, stability and function of a tooth. It is used between the preparation of the tooth and the placement of the permanent restoration.[1]  There are three main techniques for making temporary restorations: direct, pre-filling indirect and post-filling indirect.  Of the various direct techniques, the […]<\/p>\n","protected":false},"author":1,"featured_media":3785,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[40],"tags":[],"class_list":["post-3846","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-studio-en"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t