1 Porcelain veneers are not made at chairside. 2  Porcelain veneers are fabricated in a dental laboratory and therefore require at least two visits. 3  Composite resin veneers are accomplished in one visit.he major disadvantages of porcelain veneers over composite resin include the following: 1  Porcelain veneers are not made at chairside. 2  Porcelain veneers are more expensive than composite veneers. 3  Porcelain veneers cannot be repaired.
Identification. Common or English thyme (Thymus vulgaris), as the name suggests, is most commonly used as an edible herb. It thrives in U.S. Department of Agriculture plant hardiness zones 5 through 9, and generally grows to between 6 and 12 inches tall.dentification. Common or English thyme (Thymus vulgaris), as the name suggests, is most commonly used as an edible herb. It thrives in U.S. Department of Agriculture plant hardiness zones 5 through 9, and generally grows to between 6 and 12 inches tall.
For the vegetable sometimes called yam in the United States, see sweet potato. For the vegetable called yam in New Zealand, see Oxalis tuberosa. Yam is the common name for some plant species in the genus Dioscorea (family Dioscoreaceae) that form edible tubers. Yams are perennial herbaceous vines cultivated for the consumption of their starchy tubers in Asia, Africa, Central and South America, and Oceania. The tubers themselves are also called yams.