Journal of Forensic Dental Sciences
Users Online: 302 
Home Print this page  Email this page Small font size Default font size Increase font size
Wide layoutNarrow layoutFull screen layout
  Home | About JFDS | Editorial Board | Search | Ahead of print | Current Issue | Archives | Instructions | Subscribe | Online submission | Contact us | Advertise | Login 

  Table of Contents  
Year : 2014  |  Volume : 6  |  Issue : 3  |  Page : 183-185  

Micro secure digital card: A novel method for denture identification

1 Department of Prosthodontics, MNR Dental College and Hospital, Sangareddy, Andhra Pradesh, India
2 Department of Conservative Dentistry and Endodontics, MNR Dental College and Hospital, Sangareddy, Andhra Pradesh, India

Date of Web Publication18-Jul-2014

Correspondence Address:
Shreya S Colvenkar
7114, Janapriya Nile valley, PJR Enclave, Chandanagar, Hyderabad 500 032, Andhra Pradesh
Login to access the Email id

Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0975-1475.137054

Rights and Permissions

Aim: Denture labeling is of vital significance in social and forensic scenario. Numerous published work have attempted to present best method for denture marking, however not all satisfy crucial requirement either in terms of cost or storage of large amount of information. Hence, this paper describes a simple, cheap, and feasible denture marking system using portable Micro Secure Digital (MicroSD) card. These cards are created to store, modify, and view large amount of information with mobile phones, which forms an important part in majority of household in India. Materials and Methods: After try-in make a depression slightly wider than the size of the MicroSD card on the external lingual flange of the trial mandibular denture. Process the denture together with acrylic wax flap according to manufacturer's instructions. The acrylic flap is planned in such a way that it is well-flushed with surrounding areas and can be lifted on one side to access the card. MicroSD card is placed in the denture and flap is closed. Conclusion: The proposed method is simple, cheap, and can store large amount of information.

Keywords: Denture marking, forensic dentistry, MicroSD card

How to cite this article:
Colvenkar SS, Gopal S. Micro secure digital card: A novel method for denture identification. J Forensic Dent Sci 2014;6:183-5

How to cite this URL:
Colvenkar SS, Gopal S. Micro secure digital card: A novel method for denture identification. J Forensic Dent Sci [serial online] 2014 [cited 2021 Jan 23];6:183-5. Available from:

   Introduction Top

Dentists and forensic odontologists have long acknowledged the importance of denture marking. [1],[2],[3],[4] Through denture marking; one can identify the denture wearer in cases of amnesia or senility, loss of consciousness, postmortem in case of natural disasters, and forensic crime scene investigations. The ability to make a quick dental identification can lessen the emotional stress of loved ones and reduce the financial cost of the search.

Researchers have described a variety of surface marking and surface inclusion techniques in published literature. [5],[6],[7],[8],[9],[10],[11],[12],[13],[14],[15],[16],[17],[18],[19],[20],[21],[22],[23] Surface marking includes engraving or scribing on the cast or the denture itself. Surface markers (spirits, fiber-tip pens) are inexpensive, but can be easily removed by denture cleansers, abrasives, or antiseptic mouthwash. [5]

Surface inclusion techniques include metallic [13] or nonmetallic materials, microchips, [14],[15] Radiofrequency identification (RFID) tags, [16],[17],[18] barcodes, [19],[20],[21],[22] and lenticular card. [23] Although microchips, RFID tags, and barcodes allow fast and reliable denture identification, they are costly and require special equipment to view the information. [16],[17],[18],[19],[20],[21],[22] Microchips [14],[15] do not have large amount of data space and data cannot be modified by the dentist. The barcode [19],[20],[21],[22] also has disadvantage in terms of difficulty in scanning opaque pigmented acrylic resin. In addition, curvature of denture may cause distortion of barcode, making it unreadable. In lenticular card, the information can never be changed once it is printed. [23]

Hence, an attempt is made to present a simple cheap and feasible denture marking system using Micro Secure Digital (MicroSD) card. MicroSD cards are new and portable. A MicroSD card typically measures 11 × 15 × 1 mm and weighs approximately 0.5 g. The storage capacity for MicroSD cards can range from 128 MB to 4 GB. These cards are created to store, modify, and view large amounts of data with mobile phones [Figure 1].

Procedure for denture marking

Stage 1: Using a MicroSD card (Samsung Electronics Co; Japan), patient's information is stored in the denture. Information is to be stored in the form of a photograph, video, and text. Laminate the Micro SD card before incorporating in the denture

Stage 2: Using a lecron wax carver, cut a depression slightly wider than the size of the MicroSD card on the external lingual flange of the trial mandibular denture. Check if the memory card fits in the depression

Stage 3: Process the denture together with a wax sheet measuring 11 × 16 × 0.5 mm in accordance to the manufacturer's instructions

Stage 4: Disinfect, clean, and dry the prosthesis before attaching the acrylic flap to the depression. Place the attachment so that it is well-flushed with the surrounding areas and can be lifted on one side to access the card. Make two grooves on the acrylic flap and attach elastics with autopolymerizing acrylic resin (Rapid Repair; Dentsply Intl, York, PA). Attach the acrylic flap to the denture with autopolymerizing acrylic resin (Rapid Repair; Dentsply Intl, York, PA) by creating corresponding grooves. The other end of the flap (which can be lifted) carries a 1 mm acrylic extension that fits in the corresponding groove. This extension can be opened whenever it is necessary to remove the card [Figure 2] and [Figure 3]

Stage 5: Process the denture in a pressurized container with warm water (100 F, 20 psi) for 15-20 min. Finish and polish the denture

Stage 6: Place the MicroSD card in the denture and close the flap [Figure 4].
Figure 1: Micro Secure Digital (MicroSD) card with patient's information

Click here to view
Figure 2: Acrylic flap and depression prepared for identifier in mandibular complete denture

Click here to view
Figure 3: MicroSD card incorporated in the denture

Click here to view
Figure 4: MicroSD card covered with acrylic flap

Click here to view

   Discussion Top

The MicroSD card is a useful tool for denture marking. With the MicroSD card, data can be stored in the form of treatment photographs, treatment videos, family photos, and videos. The MicroSD holds large amounts of information that can be easily modified. In addition, the stored data does not need sophisticated equipment for viewing, and can even be viewed using mobile phones. With an adapter, data can be moved from mobile phone to computer or files from your computer to other devices, regardless of the type of memory card. The data is very easily accessible to people across the world with the increasing mobile penetration in developed as well as developing markets. At this time, the cost of MicroSD card is 150 rupees. The cost of this MicroSD card is significantly less than the costs of using a microchip or barcode system for denture identification.

In the present technique, the identifier can be inserted on the lingual flange of the mandibular and buccal flange of maxillary denture. These sites are better resistant to fire, esthetically acceptable, and not removed during adjustments or routine relining procedures. [8] The manufacturer claims that MicroSD cards were designed to withstand a 24-h test in sea water and to withstand the weight of a 1.6 ton truck, thus protecting data from daily minor mishaps to major impacts.

This method of denture marking can be used both for new and existing denture prosthesis that have not been labeled. A dentist could easily perform this procedure without special training or the use of a dental technician. The disadvantage of this technique is that the marker cannot be permanently sealed in the denture because the MicroSD card needs to be removed and inserted into an electronic device to view the data. In addition it would be restricted to use in dentures with a long enough or large enough flange.

To check durability, the MicroSD card was kept in the denture for 2 months to see if there is any reaction with acrylic. There was no deterioration of data and it was stable with time. The process of using a MicroSD card in denture marking is new. Future research will be required to better understand the MicroSD card's ability to withstand postmortem assaults.

   Conclusion Top

In this paper, we described a simple, easy-to-use and cost-effective design for denture identification. The MicroSD card can store abundant information. The stored data can be easily viewed through a mobile device. This technique can be used for both complete and removable partial dentures.

   References Top

1.Thomas CJ, Mori T, Miyakwa O, Chung HG. In search of a suitable denture marker. J Forensic Odontostomatol 1995;13:9-13.  Back to cited text no. 1
2.Harvey W. Identity by teeth and the marking of dentures. Br Dent J 1966;121:334-40.  Back to cited text no. 2
3.Johanson G, Ekman B. Denture marking. J Am Dent Assoc 1984;108:347-50.  Back to cited text no. 3
4.Thomas CJ. The role of the denture in identification: A review. J Forensic Odontostomatol 1984;2:13-6.  Back to cited text no. 4
5.Todo J, Lukens EM. A technique for placing names in dentures. J Prosthet Dent 1977;37:469-71.  Back to cited text no. 5
6.Toolson LB, Taylor TD. Method of denture identification. J Prosthet Dent 1989;61:114-5.  Back to cited text no. 6
7.Berry FA, Logan GI, Plata R, Riegel R. A postfabrication technique for identification of prosthetic devices. J Prosthet Dent 1995;73:341-3.  Back to cited text no. 7
8.Ryan LD, Keller JB, Rogers DE, Schaeffer L. Clear acrylic resin T-bar used in denture identification. J Prosthet Dent 1993;70:189-90.  Back to cited text no. 8
9.Coss P, Wolfaardt JF. Denture identification system. J Prosthet Dent 1995;74:551-2.  Back to cited text no. 9
10.Ibrahim WM. Denture microlabelling technique. J Prosthet Dent 1996;76:104.  Back to cited text no. 10
11.Milward PJ, Shepherd P, Brickley MR. Automatic identification of dental appliances. Br Dent J 1997;182:171-4.  Back to cited text no. 11
12.Ling BC. Computer-Printer denture microlabelling system. J Prosthet Dent 1998;79:363-4.  Back to cited text no. 12
13.Bansal PK, Sharma A, Bhanot R. Denture labeling: A new approach. Contemp Clin Dent 2011;2:76-8.  Back to cited text no. 13
[PUBMED]  Medknow Journal  
14.Reeson MG. A simple and inexpensive inclusion technique for denture identification. J Prosthet Dent 2001;86:441-2.  Back to cited text no. 14
15.Rajan M, Julian RA. A new method of marking dentures using microchips. J Forensic Odontostomatol 2002;20:1-5.  Back to cited text no. 15
16.Millet C, Jeannin C. Incorporation of microchips to facilitate denture identification by radiofrequency tagging. J Prosthet Dent 2004;92:588-90.  Back to cited text no. 16
17.Nuzzolese E, Marcario V, Di Vella G. Incorporation of radio frequency identification tag in dentures to facilitate recognition and forensic human identification. Open Dent J 2010;4:33-6.  Back to cited text no. 17
18.Madrid C, Korsvold T, Rochat A, Abarca M. Radio frequency identification (RFID) of dentures in long-term care facilities. J Prosthet Dent 2012;107:199-202.  Back to cited text no. 18
19.Aguloglu S, Zortuk M, Beydemir K. Denture bar-coding: A new horizon. Br Dent J 2009;206:589-90.  Back to cited text no. 19
20.Rajendran V, Karthigeyan S, Manoharan S. Denture marker using a two-dimensional bar code. J Prosthet Dent 2012;107:207-8.  Back to cited text no. 20
21.Mahoorkar S, Jain A. Denture identification using unique identification authority of India barcode. J Forensic Sci 2013;5:60-3.  Back to cited text no. 21
22.Sudheendra US, Sowmya K, Vidhi M, Shreenivas K, Prathamesh J. 2D barcodes: A novel and simple method for denture identification. J Forensic Sci 2013;58:170-2.  Back to cited text no. 22
23.Colvenkar SS. Lenticular card: A new method for denture identification. Indian J Dent Res 2010;21:112-4.  Back to cited text no. 23
[PUBMED]  Medknow Journal  


  [Figure 1], [Figure 2], [Figure 3], [Figure 4]


    Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
    Access Statistics
    Email Alert *
    Add to My List *
* Registration required (free)  

  In this article
    Article Figures

 Article Access Statistics
    PDF Downloaded256    
    Comments [Add]    

Recommend this journal