According to E! News, the actor's mouth had to be wired shut after the accident at the weekend.
He slipped at the entrance of his LA home in a puddle of water.
E! News said that the former High School Musical star star, 26, also suffered a gash and was given stitches but that he is expected to make a full recovery.
The schedule to promote his new comedy That Awkward Moment has apparently been put on hold.
Zac recently spent time in rehab.
COMMENT RULES: Comments that are judged to be defamatory, abusive or in bad taste are not acceptable and contributors who consistently fall below certain criteria will be permanently blacklisted. The moderator will not enter into debate with individual contributors and the moderator’s decision is final. It is Belfast Telegraph policy to close comments on court cases, tribunals and active legal investigations. We may also close comments on articles which are being targeted for abuse. Problems with commenting? firstname.lastname@example.org
Developing an ingenious solution to a stubborn problem earns respect. Don't be surprised when a prominent executive offers you a job. This position will pay extremely well. Use your extra earnings to finance a hobby. Playing a competitive sport brings out your playful side. Someone who is enchanted by your high spirits will ask for a date. It feels great to be appreciated. Let your admirer plan an outing. You'll enjoy following their lead. Do you have a partner? Plan a romantic holiday together.More