UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
Under the Securities Exchange Act of 1934
(Amendment No. 1)*
AMERICAN DENTAL TECHNOLOGIES, INC.
(Name of Issuer)
Common Stock
(Title of Class of Securities)
025352-10-5
(CUSIP Number)
December 31, 1999
(Date of Event Which Requires Filing of This Statement)
Check the appropriate box to designate the rule pursuant to which this
Schedule is filed:
/ /Rule 13d-1(b)
/x/Rule 13d-1(c)
/ /Rule 13d-1(d)
*The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which
would alter disclosures provided in a prior cover page.
The information required on the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities
Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that
section of the Act but shall be subject to all other provisions of the Act
(however, see the Notes).
SCHEDULE 13G
CUSIP No. 025352-10-5
1 Name of Reporting Person
S.S. or I.R.S. Identification No. of Above Person
Charles A. Nichols
2 Check The Appropriate Box If A Member Of A Group* (a) [ ]
(b) [ ]
3 SEC Use Only
4 Citizenship or Place of Organization
United States
5 Sole Voting Power
498,180
Number Of
Shares 6 Shared Voting Power
Beneficially -0-
Owned By
Each 7 Sole Dispositive Power
Reporting 498,180
Person
With 8 Shared Dispositive Power
-0-
9 Aggregate Amount Beneficially Owned By Each Reporting Person
498,180
10 Check Box If The Aggregate Amount In Row (9) Excludes [ ]
Certain Shares*
11 Percent Of Class Represented By Amount In Row (9)
6.7%
12 Type Of Reporting Person*
IN
* SEE INSTRUCTIONS BEFORE FILLING OUT
Item 1(a) Name of Issuer:
AMERICAN DENTAL TECHNOLOGIES, INC.
Item 1(b) Address of Issuer's Principal Executive Offices:
5555 Bear Lane
Corpus Christi, TX 78405
Item 2(a) Name of Person Filing:
Charles A. Nichols
Item 2(b) Address of Principal Business Office:
5555 Bear Lane
Corpus Christi, TX 78405
Item 2(c) Citizenship:
United States
Item 2(d) Title of Class of Securities:
Common Stock, $.04 par value
Item 2(e) CUSIP No.: 025352-10-5
Item 3. If this statement is filed pursuant to Rules 13d-1(b), or
13d-2(b) or (c), check whether the person filing is a:
Not applicable.
Item 4. Ownership.
(a) Amount Beneficially Owned (as of December
31, 1999): 498,180
(b) Percent of Class: 6.7%
(c) Number of shares as to which such person
has:
(i) sole power to vote or to direct the
vote - 498,180
(ii) shared power to vote or to direct
the vote - 0
(iii) sole power to dispose or to direct
the disposition of
- 498,180
(iv) shared power to dispose or to
direct the disposition of - 0
Item 5. Ownership of Five Percent or Less of a Class.
Not applicable.
Item 6. Ownership of More than Five Percent on Behalf of Another Person.
Not applicable.
Item 7. Identification and Classification of the Subsidiary Which Acquired
the Security Being Reported on By the Parent Holding Company.
Not applicable.
Item 8. Identification and Classification of Members of the Group.
Not applicable.
Item 9. Notice of Dissolution of Group.
Not applicable.
Item 10. Certifications.
By signing below I certify that, to the best of my knowledge and
belief, the securities referred to above were not acquired and are
not held for the purpose of or with the effect of changing or
influencing the control of the issuer of the securities and were not
acquired and are not held in connection with or as a participant in
any transaction having that purpose or effect.
Signature
After reasonable inquiry and to the best of my knowledge and belief,
I certify that the information set forth in this statement is true, complete
and correct.
Date: February 11, 2000
By: /S/ Charles A. Nichols
-----------------------
Charles A. Nichols