Tooth Mountain is generally seen as an entrance or exit summit of the celebrated Cumeengeera Horseshoe. It comprises a huge dome of mostly exposed tilted rock layers. The summit plateau offers a platform for the observation N and NW of Kenmare River and the Iveragh Peninsula beyond - Ardgroom Harbour, the faraway Skelligs, the extraordinary Pocket enclosed by the horseshoe, Lackabane and the Eskatarriffs in particular.
Cumeengeera is generally reached from Kenmare by driving through village of Lauragh.
A gradual ascent from V76724 57296 A is recommended.This route leads naturally to a little cliff top walk curving to the summit (taking in the twin spot heights 513).
An alternative approach (involving a charge imposed by landowners of €4 for access to include parking) involves parking at V75426 55335 B, and then going through a gate into the field to the right of the nearby bungalow, reaching the summit plateau by following the river gully that heads N before contouring W.
The journey to sister summit Coomacloghane is short and sweet.
Another alternative approach:
There is room for several cars to park at V755 578 C A, on the Beara Way. Continue along the track through the woods for about 500m to V750 576 D B, where you can access the open hillside. The ascent to the SSW is gentle at first but becomes increasingly steep, although the terrain is firm - mostly short grass and rocks. You will have to negotiate around many impressive, giant slabs of rock as you ascend. Linkback: https://mountainviews.ie/summit/295/comment/5055/

The photo shows the route I took up Tooth Mountain from the carpark in The Pocket of Cumeengeera ( V75426 55335 B). I'm now convinced that simon3's Track 2225 makes much more sense, as it allows for a more gradual ascent, and takes advantage of a rising ridge which will enhance the views from an early stage. My Track 2647 involves a small variation from Onzy's Track 2089 in that I do not follow the Hendroff Gap at the head of the gully but engage in a small bit of scrambling.
simon3's Start Point was V76724 57296 A, making for a much less steep approach to the first mountain in the horseshoe (Tooth) and a much more gradual descent over Tooreenbaha. The distance measured for simon3's route is 17.8km as opposed to circa 12km for Onzy and me. The extra distance merely softens the rise and fall and is well worth while, in my opinion. Linkback: https://mountainviews.ie/summit/295/comment/17651/

A major bonus on the summit of Tooth Mountain is the view over Ardgroom Harbour towards Iveragh. It's great to walk along a broad ridge over the sea (Kenmare River) and to see the mountains in the distance. I'm sure that I saw the Skelligs shimmering far away. The photo gives some small idea of what's on offer. Linkback: https://mountainviews.ie/summit/295/comment/17652/

Disappointingly when we reached the summit of Tooth, the mist had closed in and views were limited to the hand in front of your face. Luckily, before the white haze encircled us we were blessed to have the magnificent view overlooking Kilmakilloge Harbour in the photo. Linkback: https://mountainviews.ie/summit/295/comment/18152/

This walk is worth it for the views alone on any clear day Linkback: https://mountainviews.ie/summit/295/comment/3017/