Ireland 24 Wales 14
IRELAND recorded a second-successive victory under new head coach Andy Farrell with an impressive showing at home to Wales.
A late try from Wales flanker Justin Tipuric, converted by Leigh Halfpenny, reduced the deficit but the visitors' loss was their first in the Six Nations in almost two years and ended their hopes of back-to-back Grand Slams.
Ireland began the game in the ascendancy and deservedly went ahead in the 19th minute through a try from full-back Jordan Larmour.
Following a ruck inside the Wales 22, Larmour received the ball from scrum-half Conor Murray and brushed his way through the Welsh defence before touching down wide on the right.
Fly-half Johnny Sexton was embarrassingly off target with the conversion, leaving the score at 5-0.
Wales suffered a blow in the 25th minute when wing Josh Adams, who scored a hat-trick of tries in the win over Italy, was forced off and replaced by Johnny McNicholl, but they quickly responded to the setback and edged ahead.
Scrum-half Tomos Williams dived over to the right of the posts after racing clear on to a pass from Dan Biggar, with the latter adding the extras to put the visitors 7-5 ahead.
Wayne Pivac's side did not lead for long due to a costly error from Williams.
The Welsh number nine knocked on close to his own try line following a line-out and, from the resultant scrum, prop Tadhg Furlong bulldozed his way over to score.
Sexton made no mistake with a much simpler conversion, putting Ireland 12-7 in front.
Ireland took their slender advantage into the break, leading 12-7.
Ireland were rewarded for a dominant start to the second period with a third try of the afternoon, scored by Josh Van Der Flier.
Referee Romain Poite awarded the score following a lengthy consultation with the TMO after flanker Van Der Flier grounded in the left corner during a maul.
Sexton successfully kicked the conversion, giving the hosts breathing space at 19-7.
Wales thought they had found a way back into the contest but centre Hadleigh Parkes was adjudged to have lost control of the ball as he dived for the try line.
French official Poite initially awarded a try before ruling it out following another lengthy review.
Ireland wrapped up victory by scoring a bonus-point try with less than five minutes remaining on the clock.
Wing Andrew Conway crossed wide on the right to make it 24-7, although replacement fly-half Ross Byrne was unable to convert a difficult kick.
Ireland wing Jacob Stockdale told ITV: "It's going to take a few weeks to get into the new structure of things, especially the new coaching ticket and new ideas, but I thought we did it really well today.
"I think our physicality was brought to the next level and in all fairness to Wales, they came and they pushed us hard so it was just great to get the win.
"They came and they fired a few shots early on and we know how good we can be when we're all over our carrying and our break down and it just had to come throughout the game.
"Once were started to do that the tries came and it was a really fun game to play in."
Wales captain Alun Wyn Jones admitted it was tough to take positives from a game which ended in defeat.
"Ultimately Test rugby is about winning isn't it?" Wyn Jones told ITV. "You can have all the enterprise and all the beauty you like but ultimately it's about the result.
"I think we probably gave them an opportunity in the first half, a couple of errors in particular, a couple of rucks potentially at crucial times.
"There were a series of penalties we felt we should have got more from but we didn't."
Grand Slam champions Wales arrived in Ireland seeking to extend their winning run in the Guinness Six Nations to nine successive matches.
The Welsh travelled across the Irish Sea having not lost in the competition since a 37-27 defeat at the Aviva Stadium two years ago. Victory for Wayne Pivac's men would have matched Wales' most successful streak in the championship, set in the Five Nations between 1970 and 1973.
Weather forecasts suggested the Dublin clash could be played in testing weather conditions but, ahead of kick-off, there were no signs of interference from Storm Ciara.
Wales, who last year completed a tournament clean sweep by emphatically beating Ireland in Cardiff, made one change from their bonus-point victory over Italy. Saracens centre Nick Tompkins, a try-scoring debutant off the bench seven days ago, made his first Test start and George North moved back to the wing from midfield.
Ireland had won 16 of their last 17 Tests in Dublin before Saturday and showed two changes from the side which scraped past Scotland last weekend. Centre Robbie Henshaw replaced an injured Garry Ringrose, and flanker Peter O'Mahony also started in a reshaped back-row which saw CJ Stander move to number eight in place of Caelan Doris.
Wales fly-half Owen Williams sustained an injury during the warm-up, with Jarrod Evans replacing him on the visitors' bench.