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                    FOURTH AMENDMENT TO EMPLOYMENT AGREEMENT

        THIS AMENDMENT, dated as of November 9, 1995, to that certain 
employment agreement, dated as of January 1, 1987, by and between JENERIC 
INDUSTRIES, INC. (the successor to which is JENERIC/PENTRON INCORPORATED), a 
Connecticut corporation (hereinafter referred to as the "Corporation") and 
GORDON S. COHEN (hereinafter referred to as the "Executive");

                              W I T N E S S E T H:

        WHEREAS, the Executive is currently employed by the Corporation 
pursuant to an employment agreement dated as of January 1, 1987 (the 
"Agreement") the extended term of which expires on December 31, 1996 (the 
"Term"); and
        WHEREAS, because of exceptional efforts and achievements by the 
Executive during the course of his employment, the Board of Directors of the 
Corporation has resolved to modify certain of the provisions of the Agreement;
and
        WHEREAS, specifically, the Corporation desires to extend the Term, and 
the Executive desires that the Term be extended, on the provisions and 
conditions herein contained; and
        WHEREAS, in order to carry out the resolution of the Board of 
Directors, the Corporation and the Executive deem it necessary formally to make 
certain written amendments to the Agreement;
        NOW, THEREFORE, in consideration of the premises and the mutual 
covenants and agreements herein contained, the parties hereto agree as follows:

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     1.  The Term of the Agreement is hereby extended to December 31, 2002.

     2.  Paragraph 11 of the Agreement is amended to provide:

          "Automobile.  In addition to reimbursement of the Executive's expenses
          as set forth in Paragraph 6 hereof, the Corporation shall supply, at
          its expense, an automobile of Executive's choice for his use in
          rendering his services hereunder during the term of this Agreement,
          and after a reasonable period of use, a replacement thereof, together
          with a non-accountable automobile allowance in the amount of Three
          Thousand ($3,000.00) Dollars per year."

    
     3.  Subsections (f) and (g), as amended, of Paragraph 2 of the Agreement
are hereby amended as follows:

          "(f) In addition to the compensation provided for in subparagraphs (a)
          and (c) of paragraph 2 hereof, on each of the anniversary dates of
          this Agreement through and including January 1, 2002 (the "Anniversary
          Date" or "Anniversary Dates"), the Executive shall receive an option
          (the "Option") to acquire a bonus of up to 25,000 restricted shares of
          the common stock of Customedix Corporation ("Customedix") (the
          "Customedix Shares") exercisable at any time from the date of receipt
          of the Option through December 31, 2002. In order to exercise the
          Option to receive the Customedix Shares, the Executive shall give
          written notice to the Corporation and Customedix of his decision to
          accept all or a part of such shares no later than December 31, 2002,
          said notice to specify the number of Customedix Shares in the Option
          year as to which the Executive has exercised his Option. Within thirty
          (30) days after receipt of such written notice, Customedix shall cause
          to be issued the requested number of Customedix Shares to the
          Executive.

          (g)  If the Executive fails to exercise any Option on or before
          December 31, 2002, such Option shall expire, and the Executive shall
          have no further rights to acquire any Customedix Shares pursuant to
          this Agreement or the Option."

     4.  Subsections (h) and (i), as amended, of Paragraph 2 of the Agreement
are hereby amended by having references in subparagraphs 2(h) and 2(i) to "CESI"
mean
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Customedix and references to 1992 to mean 2002, and references to 1993 to mean 
2003. 

     5. In keeping with Paragraph 4 of the "Third Amendment to Employment
Agreement", Paragraph 2 of the Agreement is hereby amended by adding
subparagraph (j) as follows:

          "In addition to all other compensation provided to the Executive
          pursuant to this Paragraph 2 of this Agreement, the Executive shall
          receive for his services an additional annual bonus, not to exceed
          $150,000.00 annually, equal to two (2%) percent of gross sales by the
          Corporation, or its successors and/or assigns, of products in its
          Dental Products Division (more specifically described on Schedule 1
          hereto) in excess of base gross sales of such products in the amount
          of $6,585,000.00, which bonus shall be paid commencing with respect to
          the 1996 fiscal year of the Corporation."

     IN WITNESS WHEREOF, the undersigned, individually, or by its duly
authorized officer, have executed this Agreement as of the day and year first
aforesaid. 


                                        JENERIC/PENTRON INCORPORATED


                                        By /s/  Martin Schulman 
                                          --------------------------------------


                                        /s/  Gordon S. Cohen
                                        ----------------------------------------
                                        Gordon S. Cohen
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                                   SCHEDULE 1

                            DENTAL PRODUCTS DIVISION

        Whether sold directly or through distributors, included are all products
intended for use by dentists for the immediate treatment of patients. Products
requiring laboratory intervention prior to use or delivery to patients are
excluded; specifically excluded are casting metals, porcelains and ancillary
products intended for utilization by dental laboratories whether or not
purchased by dentists directly.