Hidden caries

[Ronnie Sim]

"Fortuitous Happenstance" would also include proper (or improper) patient
(or more precisely tooth) positioning. These days there are so many
different dental panoramic machines, producing these curved tomographs, one
cannot be precisely sure what produced the differences in pixel formation
leading to this aforesaid  diagnosis of dental caries.
----- Original Message -----
From: "Byron Benson" <BBenson at TAMBCD.EDU>
To: <ORADLIST at listserv.ucla.edu>
Sent: Tuesday, October 16, 2001 5:11 AM
Subject: Re: Hidden caries


> Panoramic images are CURVED tomographs ... with extremely wide image
layers.
> In the molar region, it would be difficult for the entire tooth to not be
in
> image layer.  The curved "pantomographic" image layers have very different
> characteristics than do flat plane conventional tomographs (vertical and
> horizontal distortion, etc.).  The resolution of intraorals would always
be
> creater than in panoramics, however.  If the caries were depicted better
on
> the panoramic, I would assume that it was merely a fortuitous happenstance
> due to the negative vertical angulation.
>
> ------------------------------------------------------------
> Byron W. Benson, D.D.S., M.S.
> Professor, Oral & Maxillofacial Radiology
> Baylor College of Dentistry
> Texas A & M University System Health Science Center
> 3302 Gaston Avenue
> Dallas, Texas 75246
> Telephone: (214) 828-8393
> Telefax: (214) 874-4551
> Email:  Bbenson at tambcd.edu
>
>
>
> -----Original Message-----
> From: Yang, Jie [mailto:JYANG at DENTAL.TEMPLE.EDU]
> Sent: Friday, October 12, 2001 2:23 PM
> To: ORADLIST at listserv.ucla.edu
> Subject: Re: Hidden caries
>
>
> Dear Ruth,
>
> Panoramic radiographs are tomographic imaging. If the caries lesions are
on
> the focal trough, they are occasionally depicted better on pantomographs
> than intra-oral radiographs.
>
> Best regards.
>
> Jie
> *****************************************************************
> Jie Yang, D.M.D.,M.M.S., M.S., Dip. ABOMR
> Assistant Professor, Division of Oral & Maxillofacial Radiology
> Temple University School of Dentistry
> 3223 N Broad Street
> Philadelphia, PA 19140
>
> Tel. 215-707-1579
> Fax. 215-707-3630
> E-mail. mailto:jyang at dental.temple.edu>
> ******************************************************************
>
>
> -----Original Message-----
> From: Ruth K. Arbuckle. [mailto:ruth.arbuckle at KODAK.COM]
> Sent: Friday, October 12, 2001 1:32 PM
> To: ORADLIST at listserv.ucla.edu
> Subject: Hidden caries
>
>
> From: RUTH K. ARBUCKLE
>
> A dentist recently sent to me a panoramic image along with intraoral
> radiographs of the molar region from the same patient. While the panoramic
> image clearly showed caries (I think it was in the 2nd molar) the
intraoral
> radiographs did not.
>
> Since we have ruled out the film as a problem, I am assuming that the
> angulation technique was not correct.
>
> Could anyone please confirm that this makes sense?
>
> Thanks, Ruth Arbuckle.