The effect of disinfection by spray atomization on dimensional accuracy of condensation silicone impressions

Disinfection efficacy of sodium hypochlorite and glutaraldehyde and their effects on the dimensional stability and surface properties of dental impressions: a systematic review

“…When the impression surface properties were evaluated, stainless test blocks as described following ADA Specification or ISO Standards ( Abdelaziz, Hassan & Hodges, 2004 ; Amalan, Ginjupalli & Upadhya, 2013 ; Azevedo et al, 2019 ; Carvalhal et al, 2011 ; Davis & Powers, 1994 ; Gounder & Vikas, 2016 ; Guiraldo et al, 2017 ; Guiraldo et al, 2012 ; Khatri et al, 2020 ; Khinnavar, Kumar & Nandeeshwar, 2015 ; Langenwalter, Aquilino & Turner, 1990 ; Martins et al, 2017 ; Nassar & Chow, 2015 ; Nassar et al, 2017 ; Shambhu & Gujjari, 2010 ; Silva & Salvador, 2004 ; Thouati et al, 1996 ; Walker et al, 2007 ; Yilmaz et al, 2007 ), as well as typical metal or acrylic maxillary or mandible dentition models were used for impression making ( Adabo et al, 1999 ; Babiker, Khalifa & Alhajj, 2018 ; Herrera & Merchant, 1986 ; Lepe & Johnson, 1997 ; Nimonkar et al, 2019 ; Rentzia et al, 2011 ; Rueggeberg et al, 1992 ; Sinobad et al, 2014 ). Several studies used specially designed model, including stainless steel model with a dental replica of two teeth prepared for complete crowns ( Drennon, Johnson & Powell, 1989 ; Saleh Saber, Abolfazli & Kohsoltani, 2010 ), cylindrical stainless steel model ( Hiraguchi et al, 2013 ; Piva et al, 2019 ; Queiroz et al, 2013 ), cuboid metallic model ( Hamedi Rad, Ghaffari & Safavi, 2010 ) and ridge-shaped epoxy resin model ( Hiraguchi et al, 2012 ). Due to lack of the standardized and identical experiment designs of the included studies, meta-analysis could not be carried out.…”

“…Two studies did not pour dental stone into alginate impressions of control group immediately after impression making ( Guiraldo et al, 2012 ; Hamedi Rad, Ghaffari & Safavi, 2010 ), or three studies lay elastomeric impressions of control group for over 30 min after impression making ( Carvalhal et al, 2011 ; Lepe & Johnson, 1997 ; Nassar & Chow, 2015 ). A total of 23 studies didn’t measure the dimensions of impression or master cast before disinfection ( Abdelaziz, Hassan & Hodges, 2004 ; AlZain, 2019 ; Carvalhal et al, 2011 ; Drennon, Johnson & Powell, 1989 ; Hamedi Rad, Ghaffari & Safavi, 2010 ; Herrera & Merchant, 1986 ; Hiraguchi et al, 2012 ; Khatri et al, 2020 ; Khinnavar, Kumar & Nandeeshwar, 2015 ; Kim et al, 2008 ; Lad et al, 2015 ; Langenwalter, Aquilino & Turner, 1990 ; Lepe & Johnson, 1997 ; Lepe, Johnson & Berg, 1995 ; Lepe et al, 2002 ; Nimonkar et al, 2019 ; Queiroz et al, 2013 ; Rentzia et al, 2011 ; Rueggeberg et al, 1992 ; Saleh Saber, Abolfazli & Kohsoltani, 2010 ; Shambhu & Gujjari, 2010 ; Shetty, Kamat & Shetty, 2013 ; Silva & Salvador, 2004 ; Sinobad et al, 2014 ). A total of 11 studies did not report whether multiple measurements were carried out or not ( Abdelaziz, Hassan & Hodges, 2004 ; Carvalhal et al, 2011 ; Davis & Powers, 1994 ; Guiraldo et al, 2017 ; Guiraldo et al, 2012 ; Hamedi Rad, Ghaffari & Safavi, 2010 ; Khatri et al, 2020 ; Nassar & Chow, 2015 ; Nassar et al, 2017 ; Nimonkar et al, 2019 ; Shambhu & Gujjari, 2010 ).…”

“…The dimensional stability of the dental impressions was evaluated by comparing measurements of the disinfected impressions or their corresponding casts with those of the undisinfected impressions or their corresponding casts. The majority of measuring devices in the studies were used with an optical microscope ( Carvalhal et al, 2011 ; Davis & Powers, 1994 ; Drennon, Johnson & Powell, 1989 ; Gounder & Vikas, 2016 ; Guiraldo et al, 2017 ; Guiraldo et al, 2012 ; Khatri et al, 2020 ; Khinnavar, Kumar & Nandeeshwar, 2015 ; Langenwalter, Aquilino & Turner, 1990 ; Lepe & Johnson, 1997 ; Martins et al, 2017 ; Nassar & Chow, 2015 ; Nassar et al, 2017 ; Nimonkar et al, 2019 ; Rentzia et al, 2011 ; Saleh Saber, Abolfazli & Kohsoltani, 2010 ; Silva & Salvador, 2004 ; Thouati et al, 1996 ; Walker et al, 2007 ; Yilmaz et al, 2007 ), and the other studies adopted digital caliper ( Abdelaziz, Hassan & Hodges, 2004 ; Babiker, Khalifa & Alhajj, 2018 ; Hamedi Rad, Ghaffari & Safavi, 2010 ; Herrera & Merchant, 1986 ), profile projector and digital measuring system ( Adabo et al, 1999 ; Piva et al, 2019 ), camera and image analysis software ( Azevedo et al, 2019 ; Sinobad et al, 2014 ), micrometer ( Hiraguchi et al, 2013 ; Rueggeberg et al, 1992 ), optical comparator ( Queiroz et al, 2013 ), and three-dimensional coordinate measuring system ( Hiraguchi et al, 2012 ).…”

“…Of the eight studies evaluating condensation silicone impressions, more than half of the studies suggested that disinfection procedure could significantly affect the dimensional stability ( Adabo et al, 1999 ; Amin et al, 2009 ; Carvalhal et al, 2011 ; Guiraldo et al, 2017 ; Sabino-Silva, Jardim & Siqueira, 2020 ; Saleh Saber, Abolfazli & Kohsoltani, 2010 ; Sinobad et al, 2014 ; Thouati et al, 1996 ). Five studies reported that the use of sodium hypochlorite caused significant dimensional changes of condensation silicone impressions ( Carvalhal et al, 2011 ; Guiraldo et al, 2017 ; Saleh Saber, Abolfazli & Kohsoltani, 2010 ; Sinobad et al, 2014 ; Thouati et al, 1996 ). In addition, one study reported 2% glutaraldehyde immersion similarly caused adverse effects on the impressions ( Carvalhal et al, 2011 ).…”

“…Dental impression materials are widely used in dentistry for making accurate casts of the dentition and its neighboring oral tissues, capable of recording the prepared tooth and its surrounding anatomic topography of the desired area ( Davis & Powers, 1994 ; Khinnavar, Kumar & Nandeeshwar, 2015 ; Martins et al, 2017 ; Nimonkar et al, 2019 ; Piva et al, 2019 ; Saleh Saber, Abolfazli & Kohsoltani, 2010 ). During the dental impression procedure, the dental impression materials come into contact with blood and saliva, which contain potentially pathogenic micro-organisms and some viruses ( Azevedo et al, 2019 ).…”