First lecture exam of the summer in a couple hours and can I tell you, I have no motivation to study. It's summer daggone-it! Can I get a break around here?
The exam will be on Class I,II,III,IV and V amalgam preparations, Class III, IV and V composite preparations and liners & bases. It's pretty much a test to see if we understand the theory behind all the work we've been doing in the Sim lab: retention form, resistance form, convenience form, convergence, divergence, pulpal floor depth, cavosurface line angles, axio-pulpal line angles, etc.
Here are examples of what I'm talking about:
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjLEcPXdM4B-4TJE4sNVUQzchrw6rLjH-Ly1Pi5r9PpEWNoE8YufccURMr1Lk_QlSTmTW0hUrSvsdrP8T0WCT_tD8xgqCVHCTAV7unKuxvKcHG9G_HESucvKOidUcBEtXmx1nFfbFVX2RkD/s320/Class+I.JPG) |
Class I (OL)
Involves Pits and fissures of posterior teeth, like the one pictured.
Also involves lingual pits of maxillary anterior teeth and Occlusal 2/3rd ( Buccal/Lingual) of Posterior teeth. |
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh1NpWTaAVE0_cV4-K0_GiNcySTEl8KBb-aQ0rEN0XiL_z2cFB-6gK0GcKdONQDAs2SI_bJVL9NTGJsxTRmdudI0r7fV66ANRKzVlFEjKIaxfab0sK9wgv2haWGgCjAnJw_4b4BmVSi4UMq/s320/Class+II.JPG) |
Class II (MO)
Involves Proximal surfaces of Posterior teeth |
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi1DYFEpWvIg5TYx3Jm2j_hM3Nvf695xbZqBVRFsz2N7Sqo4rxLeRrTyrKmaGJomhWhnUsbFIQFTCa2QvhrZEyst_eHe7ofFgfugBbIExMLy3JK_cmkOBywXmMnfEVikYpTlw_S1f_wjHO-/s1600/Class+III.jpg) |
Class III
Involves proximal surfaces of incisors and cuspids, does not involve the incisal edge
|
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhVOmFDTogOkKv7h3w94K7Bwi2X0HtjyU5dNzrUeB1WoTOX8L5Mn6VboQDMjh2HHwjjDl586cJ2xqupXyjQr9v9azclTIqPNdY2ugY9wH_C_4xln0ASFXHcVPEEXuKtETxD4GG99ARML-2R/s320/Class+IV%25281%2529.jpg) |
Class IV
Like Class III but it involves the Incisal edge. Look closely, u can
see where the restoration differs from the actual tooth |
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi31myXWY8E_z8Mc0jNi6a0L6H64iRTDh2nyGUqSGut59M5N5HNmy6P9_2K93lDTsrw9adBx2lgVtD7EbjeAbQ2XGQoEd23acrJychCzlQVgP9El0Vd0KgPtZ3BcVV6hHnyhue7_Q6tOrxX/s1600/Class+V.JPG) |
Class V
Involves the gingival third (Facial /Lingual) of all teeth.
...and that's all I have time for. Wish me luck! |