-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 PG0gxbl+OUNf0Sn4EVkzaJWtjyJl0nqYwd2/Hf0KZ20+J4hezio6xWlpwC0dqEGy
 D+7BWxwwq82bq/gFfPOpww==

<SEC-DOCUMENT>0000934999-09-000002.txt : 20090122
<SEC-HEADER>0000934999-09-000002.hdr.sgml : 20090122
<ACCEPTANCE-DATETIME>20090122163457
ACCESSION NUMBER:		0000934999-09-000002
CONFORMED SUBMISSION TYPE:	SC 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20090122
DATE AS OF CHANGE:		20090122

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ALIGN TECHNOLOGY INC
		CENTRAL INDEX KEY:			0001097149
		STANDARD INDUSTRIAL CLASSIFICATION:	ORTHOPEDIC, PROSTHETIC & SURGICAL APPLIANCES & SUPPLIES [3842]
		IRS NUMBER:				943267295
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-77942
		FILM NUMBER:		09539551

	BUSINESS ADDRESS:	
		STREET 1:		851 MARTIN AVENUE
		CITY:			SANTA CLARA
		STATE:			CA
		ZIP:			95050
		BUSINESS PHONE:		4087381500

	MAIL ADDRESS:	
		STREET 1:		851 MARTIN AVENUE
		CITY:			SANTA CLARA
		STATE:			CA
		ZIP:			95050

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			DF DENT & CO INC
		CENTRAL INDEX KEY:			0000934999
		IRS NUMBER:				521045317
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		2 EAST READ STREET
		STREET 2:		6TH FLOOR
		CITY:			BALTIMORE
		STATE:			MD
		ZIP:			21202
		BUSINESS PHONE:		4108372544

	MAIL ADDRESS:	
		STREET 1:		DF DENT & CO INC
		STREET 2:		2 EAST READ ST
		CITY:			BALTIMORE
		STATE:			MD
		ZIP:			21202
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G/A
<SEQUENCE>1
<FILENAME>algn13gdec08.txt
<DESCRIPTION>ALIGN ANNUAL FILING
<TEXT>
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.F. 20549


SCHEDULE 13G


ALIGN TECHNOLOGY INC.
Common Stock
016255101

Item 1.	a.	Align Technology Inc.
		b.	881 Martin Avenue
			Santa Clara, CA 95050

Item 2.	a.	D.F. Dent & Company, Inc.
		b.	2 East Read Street, 6th Floor
			Baltimore, Maryland 21202
		c.	Incorporated in the State of Maryland
		d.	Common stock
		e.	016255101
Item 3.		Investment adviser registered under section 203 of the
			Investment Advisers Act of 1940

Item 4.	a.	3,514,182
		b.	 5.11%
		c.	1.	3,514,182
			2.	      0
			3.	3,514,182
			4.	       0
Item 5.		N/A
Item 6.		N/A
Item 7.		N/A
Item 8.		N/A
Item 9.		N/A


</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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