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This study was designed to devise configuratively ideal cavity formations using 49 second deciduous molars, consisting of 25 extracted from the maxilla and 24 from the mandible. A cavity having at least 1 mm subcavitary (below the cavity) dentin thickness at any point of measurement and having an appropriately formed and positioned retention was defined as an ideal cavity. The same methods were used as in our previous study of first deciduous molars. The following results were obtained: 1. In upper second deciduous molars, the subcavitary dentin thickness was thin at the mesiobuccal side of the cavity; it measured 0.9 mm. In lower second deciduous molars, the subcavitary dentin thickness was thin at the mesiobuccal, distolingual sides of the cavity, and central fossa, where the retentional groove was provided; it measured 0.8-0.9 mm. The other measured values exceeded 1.0 mm. All thickness measurements were very close to the values considered as ideal. 2. In upper second deciduous molars, the margins of the cavity were positioned medially to the summits of respective cusps, 1.8-2.0 mm at the buccal side and 1.5 mm at the lingual side. The entire cavity was located lingually. 3. In lower second deciduous molars, the buccal margin of the cavity was positioned 1.7 mm medially to the summit of the distobuccal cusp and 1.2-1.3 mm medially to the summits of the other buccal cusps. The lingual margin was positioned 1.4-1.5 mm medially to the summits of respective cusps. medially to the summits of respective cusps. 4. The buccolingual width of the cavity amounted to 1/3 of the distance between the summits of the buccal and lingual cusps in both upper and lower second deciduous molars. 5. At the mesial side, the depth of cavity was 1.4 mm at the buccal wall and 1.5 mm at the lingual wall in upper second deciduous molars, and 1.4 mm at the buccal wall and 1.6 mm at the lingual wall in lower second deciduous molars. 6. The width of gingival wall in the proximal box measured 1.0 mm in both upper and lower second deciduous molars.
K Nozaka, and
M Itoh, and
R Ono, and
T Satoh, and
E Amari, and
Y Nozaka, and
T Hongoh
August 1973,
Czasopismo stomatologiczne,
K Nozaka, and
M Itoh, and
R Ono, and
T Satoh, and
E Amari, and
Y Nozaka, and
T Hongoh
August 1973,
Czasopismo stomatologiczne,
K Nozaka, and
M Itoh, and
R Ono, and
T Satoh, and
E Amari, and
Y Nozaka, and
T Hongoh
January 2017,
Journal of International Society of Preventive & Community Dentistry,
K Nozaka, and
M Itoh, and
R Ono, and
T Satoh, and
E Amari, and
Y Nozaka, and
T Hongoh
August 2006,
Journal of dentistry,
K Nozaka, and
M Itoh, and
R Ono, and
T Satoh, and
E Amari, and
Y Nozaka, and
T Hongoh
January 2010,
Journal of dentistry for children (Chicago, Ill.),
K Nozaka, and
M Itoh, and
R Ono, and
T Satoh, and
E Amari, and
Y Nozaka, and
T Hongoh
January 2013,
Indian journal of dental research : official publication of Indian Society for Dental Research,
K Nozaka, and
M Itoh, and
R Ono, and
T Satoh, and
E Amari, and
Y Nozaka, and
T Hongoh
September 2010,
European journal of paediatric dentistry,
K Nozaka, and
M Itoh, and
R Ono, and
T Satoh, and
E Amari, and
Y Nozaka, and
T Hongoh
November 1998,
Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics,
K Nozaka, and
M Itoh, and
R Ono, and
T Satoh, and
E Amari, and
Y Nozaka, and
T Hongoh
January 2007,
Journal of dentistry for children (Chicago, Ill.),
K Nozaka, and
M Itoh, and
R Ono, and
T Satoh, and
E Amari, and
Y Nozaka, and
T Hongoh
September 1984,
Fogorvosi szemle,
