FORM 4
[ X ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

Berthan Rainer 		2. Issuer Name and Ticker or Trading Symbol

SIRONA DENTAL SYSTEMS, INC. [ SIRO ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                      _____ 10% Owner
__ X __ Officer (give title below)      _____ Other (specify below)
Executive VP
(Last)          (First)          (Middle)

C/O SIRONA, FABRIKSTRASSE 31D-64625 		3. Date of Earliest Transaction (MM/DD/YYYY)

2/29/2016
(Street)

BENSHEIM,, 2M 
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3) 		2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. Code
(Instr. 8) 		4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5) 		5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4) 		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock   2/29/2016     D    27966   (1) D   (2) (3) 0   D    

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3) 		2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. Code
(Instr. 8) 		5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5) 		6. Date Exercisable and Expiration Date 7. Title and Amount of Securities Underlying Derivative Security
(Instr. 3 and 4) 		8. Price of Derivative Security
(Instr. 5) 		9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Option (right to buy)   $44.77   (4) 2/29/2016     D         16000   (5)     (6) 7/2/2022   Common Stock   16000   $0   0   D    
Option (right to buy)   $67.59   (4) 2/29/2016     D         7844   (5)     (7) 11/26/2023   Common Stock   7844   $0   0   D    
Option (right to buy)   $86.00   (4) 2/29/2016     D         9783   (5)     (8) 11/25/2024   Common Stock   9783   $0   0   D    

Explanation of Responses:
( 1)  Includes 6,329 performance stock units ("PSU") and 18,150 restricted stock units ("RSU").
( 2)  On February 29, 2016, pursuant to an Agreement and Plan of Merger, dated as of September 15, 2015 (the "Merger Agreement"), by and among Sirona Dental Systems, Inc. ("Sirona"), DENTSPLY International Inc. ("DENTSPLY") and Dawkins Merger Sub Inc., a wholly owned subsidiary of DENTSPLY ("Merger Sub"), Merger Sub merged with and into Sirona, with Sirona continuing as the surviving entity and a wholly owned subsidiary of DENTSPLY (the "Merger"). Upon completion of the Merger, DENTSPLY changed its corporate name to "DENTSPLY SIRONA Inc."
( 3)  Disposed of pursuant to the Merger Agreement in which (x) each share of Sirona common stock issued and outstanding immediately prior to the consummation of the Merger was converted into 1.8142 shares of DENTSPLY common stock, (y) each unvested RSU outstanding immediately prior to the consummation of the Merger was assumed by DENTSPLY and was converted into 1.8142 RSUs of DENTSPLY on the same terms and conditions as were in effect immediately prior to the completion of the Merger, and (z) each PSU outstanding immediately prior to the consummation of the Merger was deemed to be earned at the maximum level of 200% and was converted into DENTSPLY common stock based on the 1.8142 exchange ratio; in each case rounded down to the nearest whole share or RSU, as applicable.
( 4)  The exercise price per share of each converted Sirona stock option will be determined by dividing the per share exercise price of such stock option by the 1.8142 exchange ratio, and rounding up to the nearest whole cent.
( 5)  Disposed of pursuant to the Merger Agreement in which each outstanding and unexercised option to acquire shares of Sirona common stock, whether or not vested or exercisable, was assumed by DENTSPLY and was converted into an option to acquire shares of DENTSPLY common stock on the same terms and conditions as were in effect immediately prior to the completion of the Merger based on the 1.8142 exchange ratio, rounded down to the nearest whole share.
( 6)  25% vested on 1/1/2014, 25% vested on 7/2/2014, 25% vested on 7/2/2015, and the final 25% shall vest on 7/2/2016.
( 7)  25% vested on 11/26/2014, 25% vested on 11/26/2015, 25% shall vest on 11/26/2016, and the final 25% shall vest on 11/26/2017.
( 8)  25% vested on 11/25/2015, 25% shall vest on 11/25/2016, 20% shall vest on 11/25/2017, 20% shall vest on 11/25/2018 and the final 10% shall vest on 11/25/2019.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Berthan Rainer
C/O SIRONA, FABRIKSTRASSE 31D-64625
BENSHEIM,, 2M 

Executive VP

Signatures
/s/ Michael Friedlander Attorney-in-Fact for Rainer Berthan 3/1/2016
** Signature of Reporting Person Date


Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.
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