Here's my current workaround for this:
1) In InDesign, I add the words I want to appear in the TOC to the top of those pages: Cover, Title Page, Copyright Information, and Dedication. I assign them to a paragraph sytle called “cover” and I add this paragraph style to the EPUB TOC.
2) After I export the file as “EPUB with corrected links” (a plug in) I then open the EPUB file in Sigil for some manipulation
3) In the CSS file, I change the “cover” info to this:
h1.cover {
font-family: “Times New Roman”;
font-weight: normal;
font-style: normal;
font-size: 0.1em;
line-height: 0.2em;
text-decoration: none;
font-variant: normal;
text-indent: 0em;
text-align: center;
color: #FCFCFC;
margin: 0em;
}
This turns those page titles essentially invisible, yet they are still there and thus recognized by the TOC. The important parts of that CSS style is the font size of 0.1em, the line height of 0.2em, and the color of FCFCFC. (You could probably just delete the other pieces. This is just copied from a standard CSS sheet I use for a certain client.) The font size and line height attributes make the text extremely small. The color makes the text white, which means it dissappears on most eReaders, unless you are using a device like the iPad where it is backlit and you can choose to pick a colored background. In that case, the words would be visible, but they'd be so small that it probably still wouldn't be noticed.