<prompt> Black Triangles act as a source of plaque accumulation and flossing interference, this should be treated by:Fill the entire embrasure space with pink porcelainAndrews bridge system can be givenLarge pontics can be givenBoth 1 2  <response>: Black Triangles can be treated by:Filling the entire embrasure space with pink porcelain.Andrews bridge systemIncreasing the connector heightLoss of residual ridge contour may lead to unesthetic open gingival embrasures black triangles, food impaction and percolation of saliva during speech. 